Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Aug. 31, 2016	Aug. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income (Loss)	$ (33,882)	$ 297,612
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	239,503	215,792
Stock based compensation expense	18,784	22,085
Allowance for doubtful accounts		(3,047)
Inventory reserve	35,006	60,000
Unrealized loss on marketable securities		53,779
(Increase) Decrease in:
Accounts receivable	313,747	(72,417)
Inventories	61,190	(435,436)
Prepaid expenses and other current assets	49,597	41,841
Increase (Decrease) in:
Accounts payable and accrued expenses	(111,445)	(34,094)
Customer deposits	25,187	(50,127)
Income taxes payable	(8,202)	(122,978)
Net Cash Provided by (Used in) Operating Activities	589,485	(26,990)
CASH FLOWS FROM INVESTING ACTIVITIES:
Patent application and other asset costs		(6,776)
Purchase of equipment and furnishings	(159,680)	(236,021)
Purchase of marketable securities	(70,892)	(21,554)
Net Cash (Used in) Investing Activities	(230,572)	(264,351)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options		2,675
Repayments of notes payable and loans	(71,087)	(88,886)
Net Cash (Used In) Financing Activities	(71,087)	(86,211)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	287,826	(377,552)
CASH AND CASH EQUIVALENTS
Beginning of period	2,388,355	2,562,782
End of period	2,676,181	2,185,230
SUPPLEMENTAL DISCLOSURE:
Interest paid	27,113	30,064
Income Taxes Paid	$ 8,202	$ 228,618