Note 2 - Discontinued Operations - Components of Discontinued Operations (Details) - USD ($)		12 Months Ended
		Nov. 30, 2023	Nov. 30, 2022
Current assets of discontinued operations		$ 31,958	$ 1,270,683
Other assets of discontinued operations		1,023,566	1,389,226
Current liabilities of discontinued operations		186,789	275,910
Long-term liabilities of discontinued operations		0	289,168
Sales		30,280,957	25,646,152
Cost of goods sold		21,697,075	18,707,496
Gross profit (loss)		8,583,882	6,938,656
Engineering		598,065	580,537
Selling		2,132,101	1,904,573
General and administrative		4,322,475	3,848,828
Total expenses		7,052,641	6,333,938
Income from operations		1,531,241	604,718
Interest expense		(590,005)	(404,188)
Other		147,512	240,414
Total other expense		(442,493)	(163,774)
Income before income taxes		(708,313)	(323,944)
Income tax benefit		(212,493)	(47,620)
Discontinued Operations [Member]
Accounts receivables		0	255,508
Inventory		18,013	1,004,844
Other current assets		13,945	10,331
Current assets of discontinued operations		31,958	1,270,683
Property, plant, and equipment, net		1,023,566	1,233,692
Other assets		0	155,534
Other assets of discontinued operations		1,023,566	1,389,226
Accounts payable		3,539	120,503
Accrued salaries, wages, and commissions		0	81,026
Current portion of long-term debt		160,599	2,870
Other current liabilities		22,651	71,511
Current liabilities of discontinued operations		186,789	275,910
Long-term portion of operating lease liabilities		0	1,590
Long-term portion of finance lease liabilities		0	126,720
Long-term debt, excluding current portion		0	160,858
Long-term liabilities of discontinued operations		0	289,168
Sales		2,030,714	2,753,485
Cost of goods sold		2,122,287	2,385,409
Gross profit (loss)		(91,573)	368,076
Engineering		0	0
Selling		156,682	263,578
General and administrative		413,857	376,536
Total expenses		570,539	640,114
Income from operations		(662,112)	(272,038)
Interest expense		(61,516)	(49,684)
Other		15,315	(2,222)
Total other expense		(46,201)	(51,906)
Income before income taxes		(708,313)	(323,944)
Income tax benefit		(212,493)	(47,620)
Net Income		(495,820)	(276,324)
Discontinued Operations [Member] | Tools [Member]
Income before income taxes		(708,000)	(324,000)
Revenue from external customers		2,031,000	2,754,000
Gross Profit		(92,000)	368,000
Income (loss) from operations		(662,000)	(272,000)
Total Assets		1,056,000	2,660,000
Capital expenditures (1)	[1]	16,000	244,000
Depreciation & Amortization		$ 135,000	$ 146,000

[1] FY 2022 capital expenditures include $166,000 of finance leased assets.