Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Feb. 29, 2016	Feb. 28, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 547,729	$ 606,133
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	476,528	407,795
Stock based compensation expense	43,402	42,523
Inventory reserve	(119,924)	99,535
Allowance for doubtful accounts	2,953	$ 11,047
Deferred tax expense	106,826
(Increase) Decrease in:
Accounts receivable	(188,416)	$ (180,001)
Inventories	233,718	(483,897)
Prepaid expenses and other assets	(15,467)	65,886
(Decrease) Increase in:
Accounts payable and accrued expenses	(55,568)	155,585
Customer deposits	(260,690)	99,322
Income taxes payable	(142,267)	100,529
Net Cash Provided by Operating Activities	628,824	924,457
CASH FLOW FROM INVESTING ACTIVITIES:
Purchase of equipment, furnishings and leasehold improvements	(465,427)	(357,050)
(Purchase) of marketable securities	(164,825)	(1,021,691)
Patent application and other asset costs	(17,700)	(22,352)
Net Cash (Used In) Investing Activities	(647,952)	$ (1,401,093)
CASH FLOW FROM FINANCING ACTIVITIES:
Proceeds from exercise of options	2,885
Repayment of long term debt	(158,184)	$ (192,603)
Net Cash (Used In) Financing Activities	(155,299)	(192,603)
NET (DECREASE) IN CASH AND CASH EQUIVALENTS	(174,427)	(669,239)
CASH AND CASH EQUIVALENTS
Beginning of year	2,562,782	3,232,021
End of year	2,388,355	2,562,782
SUPPLEMENTAL CASH FLOW DISCLOSURE:
Interest paid	58,447	64,527
Income Taxes Paid	$ 230,289	$ 127,046