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CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($)
 3 Months Ended 9 Months Ended
Nov. 30, 2024
Nov. 30, 2023
Nov. 30, 2024
Nov. 30, 2023
Income Statement [Abstract]        
Net Sales $ 5,190,596 $ 5,690,022 $ 15,383,416 $ 14,932,157
Cost of Goods Sold 2,847,397 2,764,013 8,069,633 7,428,348
Gross Profit 2,343,199 2,926,009 7,313,783 7,503,809
Operating Expenses        
Research and product development costs 627,543 776,013 2,054,846 2,221,712
Marketing and selling expenses 929,196 955,017 2,814,804 2,700,327
General and administrative costs 588,823 474,457 1,722,210 1,387,006
Total Operating Expenses 2,145,562 2,205,487 6,591,860 6,309,045
Operating Income 197,637 720,522 721,923 1,194,764
Interest and Dividend Income 131,518 149,666 359,248 379,949
Net unrealized gain/(loss) on marketable securities (15,165) 20,176 38,776 31,031
Income Before Income Taxes 313,990 890,364 1,119,947 1,605,744
Income Tax Expense 39,812 200,195 174,247 320,896
Net Income $ 274,178 $ 690,169 $ 945,700 $ 1,284,848
Basic Earnings Per Share $ 0.02 $ 0.04 $ 0.06 $ 0.08
Diluted Earnings Per Share $ 0.02 $ 0.04 $ 0.06 $ 0.08
Weighted Average Shares - Basic 15,751,153 15,744,543 15,750,980 15,743,224
Weighted Average Shares - Diluted 15,771,511 15,776,972 15,771,039 15,775,675