Consolidated Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
	Aug. 31, 2012	Aug. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 70,836	$ 676,120
Depreciation and amortization	155,634	154,420
Stock based compensation expense	21,658	25,829
Allowance for doubtful accounts	6,000	6,000
Inventory reserve	30,000	36,000
Decrease (Increase) in:
Accounts receivable	(273,528)	30,462
Inventories	102,015	(835,330)
Prepaid expenses and other current assets	(80,420)	(40,531)
(Decrease) Increase in:
Accounts payable and accrued expenses	(174,938)	81,421
Customer deposits	(121,380)	168,668
Net Cash (Used In) Provided by Operating Activities	(264,123)	303,059
CASH FLOW FROM INVESTING ACTIVITIES:
Patent application costs	(32,218)	(4,760)
Purchase of equipment and furnishings	(61,277)	(112,563)
Purchase of marketable securities	(704,377)
Net Cash Used In Investing Activities	(797,872)	(117,323)
CASH FLOW FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options	20,346	358
Proceeds from equipment financing - bank		237,000
Repayments of notes payable and loans	(59,992)	(41,033)
Net Cash (Used In) Provided by Financing Activities	(39,646)	196,325
NET (DECREASE) IN CASH AND CASH EQUIVALENTS	(1,101,641)	382,061
CASH AND CASH EQUIVALENTS
Beginning of period	2,531,689	1,683,801
End of period	1,430,048	2,065,862
SUPPLEMENTAL DISCLOSURE:
Interest paid	57,648	59,368
Taxes Paid		$ 253