Note 9 - Information by Industry Segment (Details) (USD $)	3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Revenue	$ 1,162,218	$ 1,050,242
Income (loss) before provistion for income taxes	(270,656)	(320,287)
Asset information	3,346,365	3,181,813
Australia [Member]
Revenue	8,125	24,138
Canada [Member]
Revenue	19,658	11,492
Mexico [Member]
Revenue	6,976	10,464
United States [Member]
Revenue	1,127,459	1,004,148
Corporate Segment [Member]
Asset information	1,179,835	1,024,259
Automotive Diagnostic Tools and Equipment [Member]
Revenue	916,549	645,837
Income (loss) before provistion for income taxes	(31,388)	(87,070)
Asset information	1,462,089	1,235,229
Indicators and Gauges [Member]
Revenue	245,669	404,405
Income (loss) before provistion for income taxes	2,493	65,634
Asset information	704,441	922,325
Corporate, Non-Segment [Member]
Income (loss) before provistion for income taxes	$ (241,761)	$ (298,851)