PDEX 10-Q Quarter ended Dec. 31, 2010

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

For the quarterly period ended December 31, 2010

OR

FOR THE TRANSITION PERIOD FROM TO .

Commission File Number 0-14942

PRO-DEX, INC.

(Exact name of registrant as specified in its charter)

2361 McGaw Avenue, Irvine, California 92614

(Address of Principal Executive Offices)

Registrant’s telephone number: 949-769-3200

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding twelve months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past ninety days.     Yes x No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes ¨ No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company under Rule 12b-2 of the Exchange Act. (Check one):

Indicate whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes ¨ No x

Indicate the number of shares outstanding of each of the Registrant’s classes of Common Stock outstanding as of the latest practicable date: 3,272,350 shares of Common Stock, no par value, as of February 10, 2010.

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INDEX

Pro-Dex, Inc.

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PRO-DEX, INC. and SUBSIDIARIES

(unaudited)

See notes to condensed consolidated financial statements.

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PRO-DEX, INC. and SUBSIDIARIES

See notes to condensed consolidated financial statements.

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PRO-DEX, INC. and SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

See notes to condensed consolidated financial statements.

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PRO-DEX, INC. and SUBSIDIARIES

See notes to condensed consolidated financial statements.

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PRO-DEX, INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

The accompanying unaudited condensed consolidated financial statements of Pro-Dex, Inc. (“we”, “us”, “our”, “Pro-Dex” or the “Company”) have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Regulation S-K. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. These financial statements should be read in conjunction with the audited financial statements presented in our Annual Report on Form 10-K for the fiscal year ended June 30, 2010. In the opinion of management, all adjustments considered necessary for a fair presentation have been included. The results of operations for such interim periods are not necessarily indicative of the results that may be expected for the full year. For further information, refer to the consolidated financial statements and footnotes thereto included in our Annual Report on Form 10-K for the year ended June 30, 2010.

Inventories are stated at the lower of cost (first-in, first-out) or market and consist of the following:

The warranty reserve is based on historical costs of warranty repairs and expected future identifiable warranty expenses. As of December 31, 2010 and June 30, 2010 the warranty reserve amounted to $608,000 and $686,000, respectively. Such amounts are classified as accrued expenses in the accompanying consolidated balance sheets. Warranty expenses are included in cost of sales in the accompanying consolidated statements of income. Changes in estimates to previously established warranty accruals result from current period updates to assumptions regarding repair costs and warranty return rates, and are included in current period warranty expense. Warranty expense was $78,000 and $179,000 for the three months ended December 31, 2010 and 2009, respectively, and $182,000 and $366,000 for the six months ended December 31, 2010 and 2009, respectively.

Changes in our warranty accrual for the three and six months ended December 31, 2010 and 2009 are as follows:

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The following table reconciles the weighted average shares outstanding for basic and diluted net income per share for the periods indicated.

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Potentially dilutive securities not included in the diluted net income per share calculation for options that have a strike price higher than the market price for our common stock (no intrinsic value) are as follows:

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During the six months ended December 31, 2010, we had a mortgage loan with Union Bank of California, N.A (“Union Bank”) and a credit facility with Wells Fargo Bank, N.A. (“Wells Fargo”), described as follows:

Union Bank Mortgage

In March 2006, we entered into a ten-year mortgage with Union Bank for $1,650,000. The principal balance of the mortgage bore interest at a fixed annual rate of 6.73%. Payments on the mortgage were $11,379 per month (based on a 25-year amortization), with the balance of $1,291,666 in principal due on April 1, 2016. The mortgage was collateralized by our Carson City land and building. On September 16, 2010, we paid the remaining $1,519,000 balance due on the Union Bank mortgage, fully retiring such indebtedness.

Wells Fargo Credit Facility

The Wells Fargo credit facility had two components:

If borrowings under the credit line were to have exceeded $500,000, the maximum amount of borrowing was limited to the lesser of $1,000,000 or 70% of the eligible accounts receivable plus 40% of the eligible inventories. Its terms required monthly interest payments at either (i) the prime rate of interest (3.25% at December 31, 2010) plus 1.50%, or (ii) three month LIBOR (0.290% at December 31, 2010) plus 2.50%, at our discretion, based on outstanding borrowings. The line of credit expired on November 1, 2010. We had been charged an unused credit line fee of 1.50% per annum payable quarterly on the average balance of the line of credit that was not used.

The term loan had an initial balance of $2,000,000, the borrowings from which were used for construction of tenant improvements in our Irvine, California facility. Its terms require monthly principal and interest payments over the 60-month life of the loan, based on outstanding borrowings. The interest rate is fixed at 5.72% over the life of the loan.

All assets of the Company except our Carson City land and building collateralize the outstanding borrowings under the Wells Fargo credit facility.

There are certain financial and non-financial covenants that we were required to meet to be in compliance with the terms of the Wells Fargo credit facility. As a result of write-offs we recorded in the fourth quarter of our fiscal year ended June 30, 2010, we were in violation of covenants that were based on 12-month historical profitability computations as of that quarter, and as of the succeeding quarters ended September 30 and December 31, 2010. On October 8, 2010, we were informed by Wells Fargo that the bank would not renew the revolving credit line, which then expired in conformity with its terms on November 1, 2010. With respect to the covenant violations, Wells Fargo waived by letter agreements the rights it would have otherwise had as of June 30 and September 30, 2010. As further discussed below, on February 4, 2011, we replaced the Wells Fargo

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credit facility, including a refinancing of the term loan, with a credit facility agreement we have entered into with Union Bank. The current and non-current portions of the term loan in the accompanying December 31, 2010 consolidated balance sheet reflect the terms of the refinancing, whereas the presentation in the accompanying June 30, 2010 balance sheet reflect the Wells Fargo credit facility terms.

Union Bank Credit Facility

On February 4, 2011, we entered into a credit facility agreement with Union Bank that provides for the following:

The maximum amount of borrowing under the revolving credit line is the lesser of:

(a)      $1,500,000; or

(b)      the sum of 80% of eligible domestic accounts receivable, plus the lesser of:

(i)      $400,000; or

(ii)     15% of the eligible raw materials and finished goods inventories.

The revolving credit line’s terms require monthly interest payments based on borrowed amounts at a floating interest rate, calculated as Union Bank’s Reference Rate plus 0.5% (an aggregate interest rate of 3.75% at February 4, 2011). The line’s initial term expires on December 15, 2012, after which it is renewable annually at Union Bank’s option. Should Union Bank decide not to renew the line, it must give us a 60-day notice of such decision.

The terms of the non-revolving credit line, which is to be used for equipment purchases, require monthly interest payments based on borrowed amounts at a floating interest rate, calculated as Union Bank’s Reference Rate plus 0.5% (an aggregate interest rate of 3.75% at February 4, 2011). The line has a one-year term, after which amounts outstanding under the line at the end of the term will automatically convert into a three-year term loan at a floating interest rate calculated as described above with respect to the non-revolving credit line.

The terms of the $1.25 million term loan, the proceeds of which were used to pay off in full the Wells Fargo term loan described above, require monthly principal payments of $29,762, plus interest over its 42-month term. The term loan bears interest at a floating rate, calculated as Union Bank’s Reference Rate plus 0.5% (an aggregate interest rate of 3.75% at February 4, 2011).

All personal property assets of the Company collateralize the outstanding borrowings under the Union Bank credit facility.

The Union Bank credit facility contains financial covenants that require us to comply with minimum quarterly liquidity and annual profitability thresholds, non-financial covenants that include quarterly and annual reporting requirements, and certain operational restrictions.

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Deferred income taxes are provided on a liability method whereby deferred tax assets and liabilities are recognized for temporary differences. Temporary differences are the differences between the reported amounts of assets and liabilities and their tax bases. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion or all of the deferred tax assets will not be realized. Deferred tax assets and liabilities are adjusted for the effects of changes in tax laws and rates on the date of enactment.

Significant management judgment is required in determining our provision for income taxes and the recoverability of our deferred tax assets. Such determination is based primarily on our historical taxable income, with some consideration given to our estimates of future taxable income by jurisdictions in which we operate and the period over which our deferred tax assets will be recoverable. As of June 30, 2010, we maintained a $2,951,000 valuation allowance against our deferred tax assets due to cumulative taxable losses during the past three fiscal years.

As of December 31, 2010, the valuation allowance against our deferred tax assets is approximately $2,898,000. The change in valuation allowance is due primarily to the expected realization of deferred tax attributes in the current year.

As of December 31, 2010, pursuant to Accounting Standards Codification (“ASC”) 740 (formerly Financial Accounting Standards Board (“FASB”) Interpretation No. 48, “Accounting for Uncertainty in Income Taxes”), we have accrued $264,000 of unrecognized tax benefits related to various federal and state income tax matters that would reduce the Company’s income tax expense if recognized and would result in a corresponding decrease in the Company’s effective tax rate.

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:

We recognize accrued interest and penalties related to unrecognized tax benefits in income tax expense when applicable. As of December 31, 2010 there was no interest or penalties applicable to our unrecognized tax benefits since the Company has sufficient tax attributes available to fully offset any potential assessment of additional tax.

Pro-Dex and its subsidiaries are subject to U.S. federal income tax, as well as income tax of multiple state tax jurisdictions. We are currently open to audit under the statute of limitations by the Internal Revenue Service for the years ended June 30, 2007 and later. Our state income tax returns are open to audit under the statute of limitations for the years ended June 30, 2006 and later. We do not anticipate a significant change to the total amount of unrecognized tax benefits within the next 12 months.

Share-based compensation expense pursuant to ASC 718-10-10-2 (formerly FASB Statement 123(R)) for the three months ended December 31, 2010 and 2009 was $8,000 and $35,000, respectively, and $12,000 and $71,000 for the six months ended December 31, 2010 and 2009,

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respectively. Such expense was related to stock options and restricted stock grants. The effect of share-based compensation expense on our results of operations is as follows:

As of December 31, 2010, unrecognized compensation cost amounted to $95,000 and related to 104,583 non-vested outstanding stock options with a per share weighted average value of $2.22. The unrecognized expense is anticipated to be recognized on a straight-line basis over a weighted average period of 0.8 years. Following is a summary of stock option activity for the six months ended December 31, 2010 and 2009:

Following is a summary of information regarding options outstanding and options exercisable at December 31, 2010:

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In each of the six-month periods ended December 31, 2010 and 2009, revenues from two customers each constituted more than 10% of our total revenues for such periods. Information with respect to these customers is as follows:

In December 2009, our largest customer, Customer 2, informed us that it was in the process of developing, and planned to eventually manufacture, its own surgical hand pieces which are functionally comparable to the products we currently provide to the customer. We have been the exclusive manufacturer of these products since they were developed.

We currently provide this Customer with two products (“Product A” and “Product B”) and repair services for such products. Sales for each of these categories for the three and six months ended December 31, 2010 and 2009 were as follows:

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The Customer has indicated that it has released its version of Product A and is currently shipping such product to new accounts. The Customer has also indicated that it intends to continue to purchase Product A from us in sufficient levels to support (i) replacement units for its existing customers in the U.S. and Europe for the foreseeable future, (ii) all its requirements for customers in the U.S. and Europe who also use Product B until such time as the Customer’s version of Product B is marketable, and (iii) all its requirements in the South American market until this product is properly registered in this market.

Product B is a more complex device. The Customer has indicated that its first “beta units” were placed into field testing in December 2010, and that it believes it will take six to nine months to determine whether this design is robust enough to withstand the operating environment in which the product must function.

In addition, the Customer has indicated that it intends to continue to use our repair services for Products A and B for an undetermined period, except in South America, where it will purchase components from us to do its own repairs locally.

Based on the foregoing, it is possible that revenue otherwise attributable to this Customer could begin to decline during the second half of calendar year 2011. However, the Customer is not obligated either to abide by the timetables it has communicated to us or to update us as to the status of its product development efforts. Accordingly, we are unable to know or predict the status of the Customer’s initiatives on an ongoing basis. The Customer could accelerate, delay or terminate its transition to its own products at any time and without notice to us, which could have a material impact on our revenues. The identity of the Customer is protected by a confidentiality agreement.

We have implemented the initial steps of a strategic plan, the objective of which is to identify and capture additional revenue opportunities. There can be no assurance, however, as to either the timing or success of achieving this objective, and it would be our intent to reduce operating costs, if and as necessary, to minimize the impact of a revenue reduction, should it occur. In the event that the Customer’s future purchases are reduced beyond the realization of such opportunities or cost reductions, the Company is likely to experience a material and adverse impact on its business.

Our manufacture and distribution of certain products involves a risk of legal action, and, from time to time, we are named as defendants in lawsuits. It is not reasonably possible to estimate the awards or damages, or the range of awards or damages, if any, we might incur in connection with such litigation. Other than the case pending with the Orange County Water District discussed below,

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management is not aware of any material actual, pending or threatened litigation at this time.

On June 23, 2008, the Orange County Water District (“OCWD”) filed a complaint in the Superior Court of the State of California in the County of Orange concerning remediation of alleged ground water contamination in the Orange County Groundwater South Basin; Orange County Water District v. Sabic Innovative Plastics U.S. LLC, et al. , Case No. 00078246. The South Basin underlies parts of Santa Ana, California and adjacent cities. The complaint identifies 17 named defendants, including Pro-Dex, and also designates 400 unnamed Doe defendants. We moved out of this Santa Ana site in April, 2008 and have no remaining operations there. Since January 1, 2009, OCWD has named 11 additional defendants by multiple amendments to its complaint.

The complaint alleges that the defendants contaminated the South Basin with volatile organic chemicals (“VOCs”) and perchlorate through various activities at properties each defendant now controls or has controlled in the past. Through its lawsuit, the OCWD seeks compensatory relief for all its own remedial activities, and injunctive relief to compel the defendants to undertake remedial activities in general. The complaint does not, however, specify any remedial activities that the OCWD has undertaken to date or any remedial activities that it seeks any particular defendants to undertake. Moreover, from our investigation of OCWD’s remedial activities to date, we have determined that the OCWD is in the early stages of its remedial investigation and remedial planning for the South Basin groundwater contamination. In recent Case Management Conferences before the court, OCWD has refused defendants’ request to designate a date by which it will disclose its proposed soil and groundwater cleanup remedies.

As noted above, 27 other entities are named defendants in this case along with Pro-Dex. While some are small businesses, others are larger corporations or their subsidiaries. Further, as this case progresses, the OCWD is likely to add at least a few more named defendants to the case from the 400 Doe defendants it has designated in the current complaint. In the indeterminable event that we would be held liable in the case, OCWD’s total recovery probably would be allocated among several defendants, each of which would pay only a proportionate share of that total recovery. Moreover, we recently resumed settlement negotiations with OCWD in the case.

One of our past insurers has committed to pay most of our defense costs for the lawsuit, and has done so to date, while reserving its rights as to whether it will cover any damages awarded against us, or any settlement payment to which Pro-Dex agrees to resolve the lawsuit, under past policies issued to us for a three-year period, March 31, 1983 to March 31, 1986. The policies of these years have occurrence payment limits of $500,000.

Overall, the OCWD complaint remains vague, the OCWD is in an early stage of its remedial activities in the South Basin, the lawsuit is in the middle stage of discovery, one of our insurers has committed to pay most defense costs and has reserved rights under one three-year set of policies and is continuing to consider extending coverage to us under other past policies, Pro-Dex and OCWD are engaged in settlement negotiations, and any recovery the OCWD may gain through trial of the lawsuit is likely to be allocated among several defendants. Therefore, our liabilities, as well as our costs of defending, monitoring and concluding our involvement in this case are uncertain, and those costs cannot now be estimated.

Fair Value Measurements — Effective July 1, 2008, the Company adopted ASC 820-10-35-19 (formerly FASB Statement No. 157, “Fair Value Measurements”) for financial assets and liabilities measured at fair value on a recurring basis. ASC 820-10-35-19 defines fair value, establishes a framework for measuring fair value in accordance with generally accepted accounting

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principles, and expands disclosures about fair value measurements. In addition to expanding the disclosures surrounding fair value measurements, ASC 820-10-35-19 indicates that fair value represents the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is determined based upon assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, ASC 820-10-35-19 establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows:

In many cases, a valuation technique used to measure fair value includes inputs from multiple levels of the fair value hierarchy described above. The lowest level of significant input determines the placement of the entire fair value measurement in the hierarchy.

The following valuation methodology was used for the Company’s assets to measure fair value at December 31, 2010:

Cash and cash equivalents: The carrying value of cash and cash equivalents is considered to be representative of their fair values based on the short term nature of these instruments. As such these investments are classified within Level 1 of the valuation hierarchy.

Although the methods above may produce a fair value calculation that may not be indicative of the net realizable value or reflective of future fair values, the Company believes its valuation methods are appropriate.

The use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date.

The following fair value hierarchy table presents information about the Company’s assets measured at fair value on a recurring basis as of December 31, 2010:

We have evaluated events or transactions that occurred after the balance sheet date of December 31, 2010 and have identified no such events or transactions which required adjustment to, or disclosure in, these Condensed Consolidated Financial Statements other than as presented in such

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financial statements and the Notes thereto, including Note 5, “Bank Debt.”

COMPANY OVERVIEW

The following discussion and analysis provides information that our management believes is relevant to an assessment and understanding of the results of operations and financial condition of Pro-Dex, Inc. (“Company”, “Pro-Dex”, “we”, “our” or “us”) for each of the three and six-month periods ended December 31, 2010 and 2009. This discussion should be read in conjunction with the Condensed Consolidated Financial Statements and the Notes thereto included elsewhere in this report. This report contains certain forward-looking statements and information. The cautionary statements included herein should be read as being applicable to all related forward-looking statements wherever they may appear. Our actual future results could differ materially from those discussed herein. Our critical accounting policies relate to revenue recognition, inventory valuation for slow moving items, warranty reserves, and recoverability of deferred income tax assets.

Except for the historical information contained herein, the matters discussed in this report, including, but not limited to, discussions of our product development plans, business strategies and market factors influencing our results, are forward-looking statements that involve certain risks and uncertainties. Actual results may differ from those anticipated by us as a result of various factors, both foreseen and unforeseen, including, but not limited to, our ability to continue to develop new products and increase sales in markets characterized by rapid technological evolution, consolidation within our target marketplace and among our competitors, and competition from larger, better capitalized competitors. Many other economic, competitive, governmental and technological factors could impact our ability to achieve our goals. You are urged to review the risks, uncertainties and other cautionary language described in this report, as well as in our other public disclosures and reports filed with the Securities and Exchange Commission (“SEC”) from time to time, including, but not limited to, the risks, uncertainties and other cautionary language discussed in our Annual Report on Form 10-K for our fiscal year ended June 30, 2010.

With operations in Irvine, California, Beaverton, Oregon and Carson City, Nevada, we provide power and control products used in medical, aerospace, military, research and industrial applications. Experience in multi-axis motion control, fractional horsepower motors and rotary drive systems allows us to develop products that require high precision in harsh environments.

Our products are found in hospitals, dental offices, medical engineering labs, commercial and military aircraft, scientific research facilities and high tech manufacturing operations around the world. The names of Micro Motors, Oregon Micro Systems, and Astromec are used for marketing purposes as brand names.

Our principal headquarters is located at 2361 McGaw Avenue, Irvine, California 92614 and our phone number is 949-769-3200. Our Internet address is www.pro-dex.com . Our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, amendments to those reports and other SEC filings, are available free of charge through our website as soon as reasonably practicable after such reports are electronically filed with, or furnished to, the SEC. In addition, our Code of Ethics and other corporate governance documents may be found on our website at the Internet address set forth above. Our filings with the SEC may also be read and copied at the SEC’s Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549. You may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. The SEC maintains an Internet site that contains reports, proxy and information statements, and

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other information regarding issuers that file electronically with the SEC at www.sec.gov and company specific information at www.sec.gov/edgar/searchedgar/companysearch.html .

Critical Accounting Estimates and Judgments

Our consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States (“GAAP”). The preparation of our financial statements requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues, expenses and related disclosures. We base our estimates on historical experience and various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates. The significant accounting policies that are believed to be the most critical to fully understanding and evaluating our reported financial results include revenue recognition, inventory valuation for slow moving items, warranty reserves and the recoverability of deferred income tax assets.

Revenue Recognition

Revenue on product sales is recognized upon shipment to the customer based on its terms of FOB shipping point, where the risk of loss and title transfer to the customer. We record sales in accordance with ASC 605. Under these guidelines, revenue is recognized when all of the following exist: persuasive evidence that a sale arrangement exists, delivery of the product has occurred, the price is fixed or determinable, and payment is reasonably assured. We sell some of our products with a warranty that provides for repairs or replacement of any defective parts for a period after the sale, which is generally one year. At the time of the sale, the Company accrues an estimate of the cost of providing the warranty based on prior experience but the Company does not accrue an allowance for sales returns as there have been minimal returns for credit. The Company recognizes revenue under research and development agreements as certain deliverables are met as specified in each development contract.

Inventories

We determine our inventory value at the lower of cost (first-in, first-out) or market value, which is determined based on the age and quantity of inventory on hand. Generally, slow-moving inventory will be written down when the quantity of inventory on hand exceeds the sum of (i) orders on hand and (ii) estimated 12 months of usage.

Accounts Receivable

We determine an allowance for doubtful accounts based the length of time that has passed since the related sale was recognized as revenue. An allowance for doubtful accounts is generally established for accounts receivable more than 90 days old or for those accounts receivable subject to identified collection risk subsequent to recognition of the related sale. The allowance varies from 10% to 100% of the amount of the related receivable, depending on credit and collection history. Accounts receivable are charged against the allowance when it is determined that the receivable is uncollectible.

Warranties

The warranty accrual is based on the estimated return rates of products in the field and the estimated costs to repair such returned good. These assumptions are reviewed quarterly.

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Property, Plant, Equipment & Leasehold Improvements, Net

Land and building are recorded at the lesser of cost or our estimate of value at their highest and best use. Equipment and leasehold improvements are recorded at cost.

Depreciation is calculated based on a straight-line method over the estimated useful lives of the assets as follows:

Stock-Based Compensation

We are subject to ASC 718 (formerly FASB Statement No. 123 (R) “Accounting for Stock-Based Compensation,” as revised December 2004). This standard establishes the accounting standards for equity compensation, and applies to us in the recognition of the cost of stock options awarded based on the grant-date fair value of those awards.

Income Taxes

As part of the process of preparing our consolidated financial statements, we are required to estimate our income taxes in each of the jurisdictions in which we operate. This process involves estimating the actual current tax liabilities together with assessing temporary differences resulting from differing treatment of items for tax and accounting purposes. These differences result in deferred tax assets and liabilities, which are included within the consolidated balance sheet. The most significant deferred tax assets are future deductions that may arise from the realization of inventory currently reserved and from available net operating loss carry forwards and available research and development tax credits. We must then assess the likelihood that the deferred tax assets will be recovered from future taxable income and, to the extent we believe that recovery is not likely, a valuation allowance must be established.

Significant management judgment is required in determining our provision for income taxes and the recoverability of our deferred tax assets. Such determination is based primarily on our historical taxable income, with consideration given to our estimates of future taxable income by jurisdictions in which we operate and the period over which our deferred tax assets will be recoverable. We carry a valuation allowance against our deferred tax assets and changes in this allowance are reflected through the provision for income taxes.

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Description of Business

The majority of our revenue is derived from the following sources: designing, developing and manufacturing rotary drive systems for the medical device and dental industries that are manufactured in our Irvine, California facility; multi-axis motion control hardware and software used to regulate the motion of servo and stepper motors, predominantly for the factory automation, scientific research, and medical analysis equipment industries manufactured in our Beaverton, Oregon facility; and high-reliability fractional horsepower DC motors designed for harsh environments, aerospace and military and medical applications manufactured in our Carson City, Nevada facility.

Our revenue is derived from five main customer types. The sales and proportion of total sales (including repair sales) related to each customer type are noted in the table below: