Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
Nov. 30, 2014	Nov. 30, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 384,100us-gaap_ProfitLoss	$ 350,424us-gaap_ProfitLoss
Depreciation and amortization	295,297	243,869
Stock based compensation expense	34,287us-gaap_StockOptionPlanExpense	14,127us-gaap_StockOptionPlanExpense
Allowance for doubtful accounts	9,000	9,000
Inventory reserve	90,000	63,343
Write off of impaired acquisition costs		15,020us-gaap_AssetImpairmentCharges
(Increase) Decrease in:
Accounts receivable	(78,288)	8,619
Inventories	(567,520)us-gaap_IncreaseDecreaseInInventories	(280,746)us-gaap_IncreaseDecreaseInInventories
Prepaid expenses and other current assets	78,733	1,848
Increase (Decrease) in:
Accounts payable and accrued expenses	351,716	245,865
Customer deposits	(35,631)	322,033
Income taxes payable	37,894	173,067
Net Cash Provided by Operating Activities	599,588	1,166,469
CASH FLOW FROM INVESTING ACTIVITIES:
Patent application and other asset costs	(21,225)	(18,421)
Purchase of equipment and furnishings	(208,702)	(77,321)
Proceeds from sale of equipment		38,531
(Purchase) Sale of marketable securities	(1,006,921)	19,977
Net Cash (Used in) Investing Activities	(1,236,848)	(37,234)
CASH FLOW FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options		210
Repayments of notes payable and loans	(143,913)us-gaap_RepaymentsOfLongTermDebt	(94,017)us-gaap_RepaymentsOfLongTermDebt
Net Cash (Used In) Financing Activities	(143,913)	(93,807)
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(781,173)	1,035,428
CASH AND CASH EQUIVALENTS
Beginning of period	3,232,021	1,940,906
End of period	2,450,848	2,976,334
SUPPLEMENTAL DISCLOSURE:
Interest paid	49,134us-gaap_InterestPaid	82,396us-gaap_InterestPaid
Taxes Paid	$ 127,046us-gaap_IncomeTaxesPaidNet

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