Inventories (Tables)

3 Months Ended

Oct. 31, 2019

Inventory Disclosure [Abstract]

Inventories

Inventories consist of the following at:

	October 31, 2019		July 31, 2019
Raw materials and components	$	52,423,000	53,959,000
Work-in-process and finished goods	38,867,000		40,576,000
Total inventories	91,290,000		94,535,000
Less reserve for excess and obsolete inventories	19,480,000		19,696,000
Inventories, net	$	71,810,000	74,839,000