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INVENTORIES (Tables)
6 Months Ended
Nov. 30, 2021
INVENTORIES  
Schedule of inventories

 Inventories are comprised of the following (in thousands):

 

 

 

November 30, 2021

 

 

May 31, 2021

 

Raw materials and sub-assemblies

 

$8,169

 

 

$5,859

 

Work in process

 

 

4,857

 

 

 

2,988

 

Finished goods

 

 

7

 

 

 

2

 

 

 

$13,033

 

 

$8,849