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Condensed Consolidated Statements of Income (Unaudited) - USD ($)
 3 Months Ended 9 Months Ended
Nov. 30, 2021
Nov. 30, 2020
Nov. 30, 2021
Nov. 30, 2020
Income Statement [Abstract]        
Net Sales $ 4,419,401 $ 3,827,142 $ 12,134,336 $ 10,736,327
Cost of Goods Sold 2,260,874 1,896,516 6,077,645 5,624,002
Gross Profit 2,158,527 1,930,626 6,056,691 5,112,325
Operating Expenses        
Research and product development costs 417,300 406,799 1,243,513 1,241,739
Marketing and selling expenses 845,362 765,969 2,349,607 2,154,956
General and administrative costs 405,280 311,130 1,181,502 883,384
Total Operating Expenses 1,667,942 1,483,898 4,774,622 4,280,079
Operating Income 490,585 446,728 1,282,069 832,246
Interest Expense (6,245) (23,949)
Interest and Dividend Income 2,367 1,470 13,367 26,953
Other Income 10,824 30,343
Paycheck Protection Program Loan Forgiveness 1,005,372
Income Before Income Taxes 492,952 452,777 2,300,808 865,593
Income Tax Expense 116,783 132,299 314,063 199,424
Net Income $ 376,169 $ 320,478 $ 1,986,745 $ 666,169
Basic Earnings Per Share $ 0.02 $ 0.02 $ 0.13 $ 0.04
Diluted Earnings Per Share $ 0.02 $ 0.02 $ 0.13 $ 0.04
Weighted Average Shares - Basic 15,622,721 15,440,673 15,541,247 15,420,787
Weighted Average Shares - Diluted 15,654,936 15,583,089 15,572,424 15,547,604