Note 12 - Segment and Related Information (Tables)

12 Months Ended

Sep. 30, 2013

Segment Reporting [Abstract]

Reconciliation of Revenue from Segments to Consolidated [Table Text Block]

Years Ended September 30,		2013			2012			2011
Net Sales
	Indicators and Gauges	$	1,657,725		$	1,612,943		$	1,253,975
	Automotive Diagnostic Tools and Equipment		4,808,447			3,148,346			3,814,638
		$	6,466,172		$	4,761,289		$	5,068,613
Income (Loss) Before Provision for Income Taxes
	Indicators and Gauges	$	433,361		$	271,343		$	94,178
	Automotive Diagnostic Tools and Equipment		834,630			(78,433	)		229,355
	General Corporate Expenses		(1,129,186	)		(976,876	)		(996,068	)
		$	138,805		$	(783,966	)	$	(672,535	)

Reconciliation of Assets from Segment to Consolidated [Table Text Block]

Years Ended September 30,		2013		2012
Identifiable Assets
	Indicators and Gauges	$	898,555	$	850,186
	Automotive Diagnostic Tools and Equipment		1,327,932		1,586,634
	Corporate		1,278,196		769,151
		$	3,504,683	$	3,205,971

Schedule Segments by Geographic Location [Table Text Block]

Years Ended September 30,		2013		2012		2011
Revenue:
	United States of America	$	6,317,722	$	4,598,029	$	4,854,871
	Australia		23,481		14,018		26,945
	Canada		77,239		72,535		119,667
	England		5,245		-		28,924
	Mexico		16,640		36,960		23,520
	Taiwan		22,481		34,935		-
	Other foreign countries		3,364		4,812		14,686
		$	6,466,172	$	4,761,289	$	5,068,613