Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	May 31, 2019	May 31, 2018	May 31, 2019	May 31, 2018
Sales	$ 5,747,256	$ 5,294,464	$ 9,871,482	$ 10,660,000
Cost of goods sold	4,788,261	4,187,450	8,307,644	8,399,610
Gross profit	958,995	1,107,014	1,563,838	2,260,390
Expenses:
Engineering	116,773	127,539	263,986	256,602
Selling	397,270	487,991	740,617	972,522
General and administrative	814,465	949,598	1,651,371	1,798,101
Total expenses	1,328,508	1,565,128	2,655,974	3,027,225
Income (Loss) from operations	(369,513)	(458,114)	(1,092,136)	(766,835)
Other income (expense):
Interest expense	(100,402)	(68,711)	(185,441)	(138,387)
Other	11,092	(252,687)	37,915	(180,115)
Total other income (expense)	(89,310)	(321,398)	(147,526)	(318,502)
Income (Loss) from continuing operations before income taxes	(458,823)	(779,512)	(1,239,662)	(1,085,337)
Income tax expense (benefit)	(102,781)	(125,533)	(277,688)	96,040
Income (Loss) from continuing operations	(356,042)	(653,979)	(961,974)	(1,181,377)
Discontinued Operations
Income (loss) from operations of discontinued segment		(15,587)		(67,177)
Income tax expense (benefit)		3,788		16,324
Income (Loss) on discontinued operations		11,799		50,853
Net Income (Loss)	$ (356,042)	$ (665,778)	$ (961,974)	$ (1,232,230)
Net Income (Loss) per share - Basic:
Continuing Operations (in dollars per share)	$ (0.08)	$ (0.16)	$ (0.23)	$ (0.28)
Discontinued Operations (in dollars per share)				(0.01)
Net Income (Loss) per share (in dollars per share)	(0.08)	(0.16)	(0.23)	(0.29)
Net Income (Loss) per share - Diluted:
Continuing Operations (in dollars per share)	(0.08)	(0.16)	(0.23)	(0.28)
Discontinued Operations (in dollars per share)				(0.01)
Net Income (Loss) per share (in dollars per share)	$ (0.08)	$ (0.16)	$ (0.23)	$ (0.29)
Weighted average outstanding shares used to compute basic net income per share (in shares)	4,299,289	4,213,893	4,272,532	4,192,592
Weighted average outstanding shares used to compute diluted net income per share (in shares)	4,299,289	4,213,893	4,272,532	4,192,592