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Inventories (Details) - USD ($)
Sep. 30, 2017
Jun. 30, 2017
Inventory Disclosure [Abstract]    
Parts inventory $ 1,741,000 $ 1,789,000
Work in process 183,000 205,000
Finished goods 790,000 745,000
Less: Reserve for obsolescence (260,000) (180,000)
Total $ 2,454,153 $ 2,559,485