Quarterly report pursuant to Section 13 or 15(d)

UNCOMPLETED CONTRACTS (Details)

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UNCOMPLETED CONTRACTS (Details) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2016
Dec. 31, 2015
Revenue Recognized $ (1,729,700) $ (1,685,500)
Less: Billings to date 2,430,100 2,273,400
Costs and estimated earnings in excess of billings on uncompleted contracts [1]   204,000
Billings in excess of costs and estimated earnings on uncompleted contracts $ 700,400 587,900
Contracts Receivable [Member]    
Revenue Recognized   1,814,300
Less: Billings to date   $ 1,610,300
[1] These numbers were derived from the audited financial statements for the year ended December 31, 2015.