Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	May 31, 2016	May 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 55,791	$ 154,022
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	114,813	102,176
Stock based compensation expense	7,552	11,061
Allowance for doubtful accounts		(3,047)
Inventory reserve	28,000	30,000
Unrealized loss on marketable securities		13,268
Decrease (Increase) in:
Accounts receivable	396,294	306,835
Inventories	(134)	(226,145)
Prepaid expenses and other current assets	32,012	34,197
(Decrease) Increase in:
Accounts payable and accrued expenses	(164,774)	80,228
Customer deposits	(23,979)	(34,782)
Income taxes payable	(6,507)	(175,404)
Net Cash Provided by Operating Activities	439,068	292,409
CASH FLOWS FROM INVESTING ACTIVITIES:
Patent application costs		(1,010)
Purchase of equipment and furnishings	(93,772)	(75,992)
Purchase of marketable securities	(62,343)	(11,377)
Net Cash (Used in) Investing Activities	(156,115)	(88,379)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of notes payable and loans	(35,507)	(49,636)
Net Cash (Used In) Financing Activities	(35,507)	(49,636)
NET INCREASE IN CASH AND CASH EQUIVALENTS	247,446	154,394
CASH AND CASH EQUIVALENTS
Beginning of period	2,388,355	2,562,782
End of period	2,635,801	2,717,176
SUPPLEMENTAL DISCLOSURE:
Interest paid	13,745	15,288
Taxes Paid	$ 16,082	$ 228,618