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Balance Sheets (Current Period Unaudited) - USD ($)
Mar. 31, 2025
Dec. 31, 2024
Current assets:    
Cash and cash equivalents $ 1,269,212 $ 1,875,655
Marketable securities 6,851,997 7,522,625
Accounts receivable, net of allowance for credit losses of $18,114 at March 31, 2025 and $14,342 at December 31, 2024 1,552,079 1,428,455
Inventories (net) 1,503,061 1,451,995
Prepaid expenses and other current assets 244,723 207,804
Prepaid income taxes 270,344 179,017
Total current assets 11,691,416 12,665,551
Deferred income taxes, net 137,006 175,397
Property, plant and equipment:    
Land 69,000 69,000
Factory equipment and fixtures 4,746,255 4,743,238
Building and improvements 3,336,943 3,336,352
Total property, plant and equipment 8,152,198 8,148,590
Less: accumulated depreciation 7,217,233 7,192,203
Total property, plant and equipment (net) 934,965 956,387
TOTAL ASSETS 12,763,387 13,797,335
Current liabilities:    
Accounts payable 378,250 425,003
Accrued expenses 1,527,736 1,467,933
Dividends payable 21,652 21,533
Total current liabilities 1,927,638 1,914,469
Total liabilities 1,927,638 1,914,469
Commitments and Contingencies  
Stockholders’ equity:    
Common stock $.10 par value; 10,000,000 shares authorized; 4,594,319 shares issued and outstanding at March 31, 2025 and December 31, 2024 459,432 459,432
Retained earnings 10,376,317 11,423,434
Total stockholders’ equity 10,835,749 11,882,866
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY $ 12,763,387 $ 13,797,335