Note 4 - Inventories - Components of Inventories (Details) - USD ($)	Apr. 01, 2017	Oct. 01, 2016
Raw materials	$ 5,845,272	$ 5,476,393
Work in process	397,188	678,753
Finished goods	1,642,315	1,807,296
Reserve for obsolescence	(514,000)	(525,000)
Inventories, net	$ 7,370,775	$ 7,437,442	[1]

[1] The Balance Sheet at October 1, 2016, has been derived from the audited financial statements at that date.