Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Sep. 30, 2024	Dec. 31, 2023
Current Assets
Cash and cash equivalents	$ 1,665,325	$ 1,387,075
Short-term investments	496,592	1,771,120
Accounts receivable - less allowances of $160,000	4,606,800	4,275,882
Contract assets		118,301
Inventories, net	7,404,782	7,327,653
Assets held for sale	348,400
Income taxes receivable	75,344	580,287
Other current assets	797,618	380,562
Total current assets	15,394,861	15,840,880
Property, Plant and Equipment
Land and improvements	1,401,402	1,510,513
Buildings and improvements	6,095,394	6,835,619
Production equipment and other	36,677,607	37,952,902
Property, Plant and Equipment, Gross	44,174,403	46,299,034
Less accumulated depreciation	33,177,749	34,633,952
Net property, plant and equipment	10,996,654	11,665,082
Deferred income taxes, net		324,943
Total assets	26,391,515	27,830,905
Current Liabilities
Accounts payable	1,260,311	788,974
Accrued wages and salaries	622,738	514,900
Other accrued expenses	300,973	129,963
Unearned revenue and customer deposits	372,132	430,179
Total current liabilities	2,556,154	1,864,016
Deferred income taxes, net	160,796
Total liabilities	2,716,950	1,864,016
Shareholders' Equity
Preferred stock, no par value, 500,000 shares authorized: none outstanding
Common stock, $1.00 par value, 4,000,000 shares authorized, 1,138,096 shares issued; 966,132 shares outstanding	1,138,096	1,138,096
Additional paid-in capital	447,134	447,134
Retained earnings	26,011,433	28,303,757
Treasury stock, 171,964 shares at cost	(3,922,098)	(3,922,098)
Total shareholders' equity	23,674,565	25,966,889
Total liabilities and shareholders' equity	$ 26,391,515	$ 27,830,905