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Note 11 - Segment and Related Information (Tables)
 9 Months Ended
Jun. 30, 2017
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
 
 
Three Months Ended
 
 
Nine Months Ended
 
 
 
June 30
 
 
June 30
 
 
 
2017
 
 
2016
 
 
2017
 
 
2016
 
                                 
Sales
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial Air Handling
  $
3,343,945
    $
-
    $
3,343,945
    $
-
 
Test and Measurement
    
2,452,854
     
1,530,244
     
5,049,991
     
3,953,740
 
Industrial Hose
    
1,423,827
     
-
     
4,529,931
     
-
 
Total Sales
  $
7,220,626
    $
1,530,244
    $
12,923,867
    $
3,953,740
 
                                 
Income (Loss) Before Provision for Income Taxes
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial Air Handling
    
607,471
     
-
     
607,471
     
-
 
Test and Measurement (1)
    
880,600
     
(8,095
 )    
(19,446
 )    
(519,728
 )
Industrial Hose
    
(509,175
 )    
-
     
306,433
     
-
 
Income (Loss) Before Provision for Income Taxes
   $
978,896
    $
(8,095
 )   $
894,458
    $
(519,728
 )