Note 9 - Information on Industry Segments (Details) - USD ($)	3 Months Ended	6 Months Ended
Apr. 02, 2016	Mar. 28, 2015	Apr. 02, 2016	Mar. 28, 2015
Medical [Member] \| Operating Segments [Member]
Net sales	$ 10,972,017	$ 11,105,935	$ 22,364,814	$ 23,938,580
Operating profit	1,229,251	1,215,146	2,731,102	3,000,320
Custom Products [Member] \| Operating Segments [Member]
Net sales	3,880,612	3,927,683	13,939,997	6,815,713
Operating profit	154,420	(69,473)	359,220	(345,654)
Operating Segments [Member]
Net sales	14,852,629	15,033,618	36,304,811	30,754,293
Operating profit	1,383,671	1,145,673	3,090,322	2,654,666
Corporate, Non-Segment [Member]
Corporate expense	(223,481)	(220,876)	(373,677)	(385,804)
Operating profit	1,160,190	924,797	2,716,645	2,268,862
Corporate expense	4,030,646	4,057,071	7,957,492	8,161,987
Other income (expense)	(53,441)	171,641	54,856	237,901
Income before income taxes	$ 1,106,749	$ 1,096,438	$ 2,771,501	$ 2,506,763

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1)(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.7)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

+ References

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+ References

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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