XML 31 R19.htm IDEA: XBRL DOCUMENT v3.7.0.1
Inventories (Tables)
3 Months Ended
May 31, 2017
Inventories Tables  
Inventories
   May 31,   February 28, 
   2017   2017 
Raw materials and subassemblies  $1,130,293   $1,197,506 
Finished goods   365,098    369,428 
Work in process   99,940    28,460 
Total   1,595,331    1,595,394 
Less: Allowance   (281,710)   (254,710)
Net inventories  $1,313,621   $1,340,684