Note 10 - Information on Industry Segments (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 27, 2015	Jun. 28, 2014	Jun. 27, 2015	Jun. 28, 2014
Medical [Member] | Operating Segments [Member]
Net sales:
Net sales	$ 11,663,716	$ 10,293,467	$ 35,602,295	$ 32,062,039
Operating profit (loss) before corporate expense:
Operating profit	1,404,066	756,035	4,404,386	2,927,520
Operating income	1,404,066	756,035	4,404,386	2,927,520
Custom Products [Member] | Operating Segments [Member]
Net sales:
Net sales	4,149,758	2,957,518	10,965,471	10,750,752
Operating profit (loss) before corporate expense:
Operating profit	89,762	(61,915)	(255,893)	419,756
Operating income	89,762	(61,915)	(255,893)	419,756
Corporate Segment [Member]
Operating profit (loss) before corporate expense:
Non-allocable corporate expenses	(175,626)	(131,116)	(561,430)	(438,470)
Operating Segments [Member]
Operating profit (loss) before corporate expense:
Operating profit	1,493,828	694,120	4,148,493	3,347,276
Operating income	1,493,828	694,120	4,148,493	3,347,276
Net sales	15,813,474	13,250,985	46,567,766	42,812,791
Operating profit	1,318,202	563,004	3,587,063	2,908,806
Operating income	1,318,202	563,004	3,587,063	2,908,806
Net non-operating income (expense)	64,333	13,049	302,235	35,058
Income before income taxes	$ 1,382,535	$ 576,053	$ 3,889,298	$ 2,943,864