Note 4 - Inventory

3 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Inventory Disclosure [Text Block]

4.

  INVENTORY

Inventory is valued at the lower of cost (

first

-in,

first

-out) or market and consist of:

	March 31, 2018		December 31, 2017
Raw materials and component parts	$	2,547,745	$	2,637,138
Work-in-process		641,430		523,644
Finished products		1,182,683		1,200,204
Total Inventory	$	4,371,858		4,360,986
Less: inventory reserves		465,917		457,505
Net Inventory	$	3,905,941	$	3,903,481