Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities
Net Income (loss)	$ (583,137)	$ 447,313
Adjustments to reconcile net income (loss) to net cash used in operating activities
Depreciation	306,032	320,424
Deferred income taxes	(43,000)	(24,000)
Changes in operating assets and liabilities
Accounts receivable	(1,197,937)	(990,427)
Inventories	(877,722)	(1,093,460)
Other current assets	(160,452)	(37,522)
Accounts payable	924,168	754,192
Accrued wages and salaries	212,746	197,065
Other accrued expenses	(212,227)	53,411
Unearned revenue and customer deposits	(19,881)	(15,390)
Net cash used in operating activities	(1,651,410)	(388,394)
Cash flows from investing activities
Capital expenditures	(413,419)	(120,594)
Proceeds from certificates of deposit	498,000	0
Net cash provided by (used in) investing activities	84,581	(120,594)
Cash flows from financing activities
Cash dividends paid	(212,549)	(212,549)
Net cash used in financing activities	(212,549)	(212,549)
Net decrease in cash and cash equivalents	(1,779,378)	(721,537)
Cash and cash equivalents at beginning of period	4,045,101	2,036,954
Cash and cash equivalents at end of period	$ 2,265,723	$ 1,315,417