Inventories (Details) - USD ($)	May 31, 2016	Feb. 29, 2016
Inventories Tables
Raw materials and subassemblies	$ 1,427,544	$ 1,452,566
Finished goods	538,428	549,106
Work in process	154,249	118,415
Total	2,120,221	2,120,087
Less: Allowance	202,704	174,704
Net inventories	$ 1,917,517	$ 1,945,383

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount of valuation reserve for inventory.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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