Note 2 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Sep. 30, 2013

Accounting Policies [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

		2013			2012			2011
Balance October 1		$	451		$	993		$	3,415
	Current year provisions		8,690			7,564			163
	Expenditures		(9,052	)		(8,106	)		(2,585	)
Balance September 30		$	89		$	451		$	993

Schedule of Inventory, Current [Table Text Block]

	2013		2012
Raw materials and component parts	$	852,229	$	1,061,957
Work-in-process		590,687		451,733
Finished products		146,900		221,080
	$	1,589,816	$	1,734,770

Property, Plant and Equipment, Estimated Useful Lives

Class	Method	Estimated Useful Lives (in years)
Buildings	Straight-line	10	to	40
Machinery and equipment	Straight-line	3	to	10
Tools and dies	Straight-line		3