Condensed Consolidated Statements of Income - USD ($)	3 Months Ended		9 Months Ended
	Nov. 30, 2022	Nov. 30, 2021	Nov. 30, 2022	Nov. 30, 2021
Income Statement [Abstract]
Net Sales	$ 3,586,165	$ 4,419,401	$ 11,401,029	$ 12,134,336
Cost of Goods Sold	1,761,797	2,260,874	5,574,035	6,077,645
Gross Profit	1,824,368	2,158,527	5,826,994	6,056,691
Operating Expenses
Research and product development costs	520,187	417,300	1,543,310	1,243,513
Marketing and selling expenses	792,710	845,362	2,359,430	2,349,607
General and administrative costs	407,990	405,280	1,262,670	1,181,502
Total Operating Expenses	1,720,887	1,667,942	5,165,410	4,774,622
Operating Income	103,481	490,585	661,584	1,282,069
Interest and Dividend Income	38,803	2,367	64,725	13,367
Net unrealized loss on marketable securities	(9,231)		(40,256)
Paycheck Protection Program Loan Forgiveness				1,005,372
Income Before Income Taxes	133,053	492,952	686,053	2,300,808
Income Tax Expense	28,155	116,783	113,396	314,063
Net Income	$ 104,898	$ 376,169	$ 572,657	$ 1,986,745
Basic Earnings Per Share	$ 0.01	$ 0.02	$ 0.04	$ 0.13
Diluted Earnings Per Share	$ 0.01	$ 0.02	$ 0.04	$ 0.13
Weighted Average Shares - Basic	15,738,180	15,622,721	15,733,284	15,541,247
Weighted Average Shares - Diluted	15,773,370	15,654,936	15,764,351	15,572,424