Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2019	Aug. 31, 2018
Sales	$ 5,503,622	$ 5,280,269	$ 15,375,104	$ 15,940,268
Cost of goods sold	4,498,800	4,105,012	12,806,444	12,504,621
Gross profit	1,004,822	1,175,257	2,568,660	3,435,647
Expenses:
Engineering	116,153	201,845	380,139	458,447
Selling	378,811	475,604	1,119,428	1,448,124
General and administrative	814,702	857,740	2,466,073	2,655,844
Impairment of asset held for lease		199,175		199,175
Total expenses	1,309,666	1,734,364	3,965,640	4,761,590
Income (Loss) from operations	(304,844)	(559,107)	(1,396,980)	(1,325,943)
Other income (expense):
Interest expense	(89,208)	(82,058)	(274,649)	(220,445)
Other	24,082	(307,735)	61,997	(487,850)
Total other income (expense)	(65,126)	(389,793)	(212,652)	(708,295)
Income (Loss) from continuing operations before income taxes	(369,970)	(948,900)	(1,609,632)	(2,034,238)
Income tax expense (benefit)	(80,754)	(182,184)	(358,442)	(86,145)
Income (Loss) from continuing operations	(289,216)	(766,716)	(1,251,190)	(1,948,093)
Discontinued Operations
Income (loss) from operations of discontinued segment				(67,177)
Income tax expense (benefit)				16,324
Income (Loss) on discontinued operations				50,853
Net Income (Loss)	$ (289,216)	$ (766,716)	$ (1,251,190)	$ (1,998,946)