Condensed Balance Sheets - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 136,000	$ 156,000
Accounts receivable, net of allowance for doubtful accounts of $49,000 at March 31, 2017 and December 31, 2016	611,000	556,000
Inventory, net of allowance of $470,000 at March 31, 2017 and $449,000 at December 31, 2016	1,503,000	1,582,000
Prepaid expenses and other current assets	63,000	92,000
Total current assets	2,313,000	2,386,000
Property, plant and equipment, net	805,000	824,000
Patents, net	100,000	93,000
Other assets	21,000	21,000
Deferred finance costs - line of credit, net	39,000	47,000
Total assets	3,278,000	3,371,000
Current liabilities
Accounts payable	304,000	304,000
Accrued expenses and other current liabilities	256,000	276,000
Wages payable	287,000	299,000
Line of credit	750,000	639,000
Current portion of long-term debt	75,000	75,000
Total current liabilities	1,672,000	1,593,000
Long-term debt, net of current portion and deferred finance costs	701,000	753,000
Total liabilities	2,373,000	2,346,000
COMMITMENTS AND CONTINGENCIES
Stockholders' equity:
Preferred stock; par value $.01 per share; 5,000,000 shares authorized, none issued and outstanding at March 31, 2017 and December 31, 2016	0	0
Common stock; par value $.01 per share; 50,000,000 shares authorized; 28,842,788 issued and outstanding at March 31, 2017 and December 31, 2016	288,000	288,000
Additional paid-in capital	21,048,000	21,037,000
Accumulated deficit	(20,431,000)	(20,300,000)
Total stockholders’ equity	905,000	1,025,000
Total liabilities and stockholders’ equity	$ 3,278,000	$ 3,371,000