Balance Sheets (Current Period Unaudited) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 910,705	$ 550,135
Marketable securities	7,691,880	7,622,196
Accounts receivable, net of allowance for doubtful accounts of $16,895 at June 30, 2019 and December 31, 2018	1,533,255	1,672,567
Inventories, net	1,300,791	1,482,151
Prepaid expenses and other current assets	229,816	159,364
Prepaid income taxes	31,480	200,687
Total current assets	11,697,927	11,687,100
Land	69,000	69,000
Factory equipment and fixtures	4,412,216	4,406,174
Building and improvements	2,827,195	2,801,582
Total property, plant, and equipment	7,308,411	7,276,756
Less: Accumulated depreciation	6,525,629	6,448,831
Total property, plant, and equipment, net	782,782	827,925
Other assets, net	22,235	29,647
TOTAL ASSETS	12,502,944	12,544,672
Accounts payable	90,452	186,797
Accrued expenses	1,363,766	1,040,635
Dividends payable	140,649	138,719
Total current liabilities	1,594,867	1,366,151
Deferred income taxes	208,511	253,583
Commitments and contingencies
Stockholders’ equity:
Common stock $.10 par value, 10,000,000 shares authorized; 4,594,319 shares issued and outstanding at June 30, 2019 and December 31, 2018, respectively	459,432	459,432
Retained earnings	10,240,134	10,465,506
Total stockholders’ equity	10,699,566	10,924,938
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 12,502,944	$ 12,544,672