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Inventories (Tables)
9 Months Ended
Jun. 30, 2020
Inventory Disclosure [Abstract]  
Net Inventories
Net inventories at June 30, 2020 and September 30, 2019 consist of the following:
 
June 30,
 
2020
   
September 30,
 
2019
 
Raw materials
  $
15,090,000
    $
14,158,000
 
Work in process
   
580,000
     
1,397,000
 
Finished goods
   
8,852,000
     
9,811,000
 
Used equipment
   
40,000
     
—  
 
                 
  $
24,562,000
    $
25,366,000