Note 3 - Discontinued Operations - Components of Discontinued Operations (Details) - USD ($)		3 Months Ended		6 Months Ended
		May 31, 2024	May 31, 2023	May 31, 2024	May 31, 2023	Nov. 30, 2023
Current assets of discontinued operations		$ 22,837		$ 22,837		$ 31,958
Other assets of discontinued operations		1,008,949		1,008,949		1,023,566
Current liabilities of discontinued operations		181,846		181,846		186,789
Loss before tax		(38,028)	$ (29,237)	(87,930)	$ (39,471)
Discontinued Operations [Member]
Inventory		18,013		18,013		18,013
Other current assets		4,824		4,824		13,945
Current assets of discontinued operations		22,837		22,837		31,958
Property, plant, and equipment, net		1,008,949		1,008,949		1,023,566
Other assets of discontinued operations		1,008,949		1,008,949		1,023,566
Accounts payable		1,507		1,507		3,539
Current portion of long-term debt		158,792		158,792		160,599
Other current liabilities		21,547		21,547		22,651
Current liabilities of discontinued operations		181,846		181,846		$ 186,789
Discontinued Operations [Member] | Tools [Member]
Revenue from external customers		0	783,000	0	1,591,000
Gross Profit (loss)		(25,000)	147,000	(52,000)	309,000
Operating Expense (Income)		(1,000)	161,000	9,000	318,000
Loss from operations		(24,000)	(14,000)	(61,000)	(9,000)
Loss before tax		(38,000)	(29,000)	(88,000)	(39,000)
Total Assets		1,032,000	2,295,000	1,032,000	2,295,000
Capital expenditures	[1]	0	0	0	16,000
Depreciation & Amortization		$ 7,000	$ 44,000	$ 14,000	$ 81,000

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