Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2022	Aug. 31, 2021
Sales	$ 8,140,253	$ 6,591,829	$ 21,028,673	$ 17,702,628
Cost of goods sold	6,099,772	4,853,408	15,603,127	13,199,471
Gross profit	2,040,481	1,738,421	5,425,546	4,503,157
Expenses:
Engineering	168,098	143,629	446,112	387,147
Selling	476,812	532,232	1,594,740	1,549,164
General and administrative	964,764	902,356	3,069,907	2,626,383
Total expenses	1,609,674	1,578,217	5,110,759	4,562,694
Income (Loss) from operations	430,807	160,204	314,787	(59,537)
Other income (expense):
Interest expense	(132,721)	(90,440)	(306,817)	(223,911)
Other	3,213	2,041	207	36,682
Total other income (expense)	(129,508)	(88,399)	(306,610)	(187,229)
Income (Loss) before income taxes	301,299	71,805	8,177	(246,766)
Income tax expense (benefit)	63,524	15,349	1,774	(52,074)
Net Income (Loss)	$ 237,775	$ 56,456	$ 6,403	$ (194,692)