Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Aug. 31, 2023	Aug. 31, 2022	Aug. 31, 2023	Aug. 31, 2022
Sales	$ 8,117,422	$ 7,476,215	$ 23,428,681	$ 19,030,526
Cost of goods sold	5,816,798	5,516,558	16,757,586	13,876,238
Gross profit	2,300,624	1,959,657	6,671,095	5,154,288
Expenses
Engineering	170,595	168,098	439,387	446,112
Selling	566,327	417,822	1,608,752	1,407,450
General and administrative	1,095,479	873,469	3,178,285	2,790,825
Total expenses	1,832,401	1,459,389	5,226,424	4,644,387
Income from operations	468,223	500,268	1,444,671	509,901
Other income (expense):
Interest expense	(160,792)	(118,204)	(419,802)	(270,518)
Other	(2,528)	3,179	141,079	2,353
Total other expense	(163,320)	(115,025)	(278,723)	(268,165)
Income from continuing operations before income taxes	304,903	385,243	1,165,948	241,736
Income tax expense	64,030	81,236	245,019	51,055
Net income (loss) from continuing operations	240,873	304,007	920,929	190,681
Discontinued Operations (Note 3)
Loss from operations of discontinued operations	(398,611)	(83,944)	(438,081)	(233,559)
Income tax benefit	(83,708)	(17,712)	(91,997)	(49,281)
Net income (loss) on discontinued operations	(314,903)	(66,232)	(346,084)	(184,278)
Net income (loss)	$ (74,030)	$ 237,775	$ 574,845	$ 6,403