Note 4 - Inventory

6 Months Ended

Jun. 30, 2019

Notes to Financial Statements

Inventory Disclosure [Text Block]

4.

  INVENTORY

Inventory is valued at the lower of cost (

first

-in,

first

-out) or net realizable value and consists of:

	June 30, 2019		December 31, 2018
Raw materials and component parts	$	2,412,331	$	2,313,664
Work-in-process		2,154,000		1,209,117
Finished products		1,840,123		2,201,693
Total inventory	$	6,406,454		5,724,474
Less: inventory reserves		242,342		226,492
Net inventory	$	6,164,112	$	5,497,982