Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2022	May 31, 2021
Sales	$ 7,275,353	$ 5,710,228	$ 12,888,420	$ 11,110,800
Cost of goods sold	5,082,195	3,988,170	9,503,119	8,346,063
Gross profit	2,193,158	1,722,058	3,385,301	2,764,737
Expenses:
Engineering	143,943	122,127	278,014	243,518
Selling	630,772	543,958	1,117,928	1,016,933
General and administrative	1,097,350	907,192	2,105,143	1,724,028
Total expenses	1,872,065	1,573,277	3,501,085	2,984,479
Income (Loss) from operations	321,093	148,781	(115,784)	(219,742)
Other income (expense):
Interest expense	(97,392)	(74,787)	(174,096)	(133,471)
Other	(1,454)	6,984	(3,005)	34,642
Total other income (expense)	(98,846)	(67,803)	(177,101)	(98,829)
Income (Loss) before income taxes	222,247	80,978	(292,885)	(318,571)
Income tax expense (benefit)	46,894	16,888	(61,749)	(67,423)
Net Income (Loss)	$ 175,353	$ 64,090	$ (231,136)	$ (251,148)