4. Inventories

12 Months Ended

Mar. 31, 2016

Inventory Disclosure [Abstract]

Inventory Disclosure [Text Block]

4.                   Inventories

Inventories consist of:

	March 31,
	2016			2015
Purchased parts	$	3,420,249		$	2,746,671
Work-in-process		1,446,293			1,514,356
Finished  goods		102,490			334
Less: Allowance for obsolete inventory		(290,000	)		(229,287	)
	$	4,679,032		$	4,032,074

Work-in-process inventory includes $1,331,784 and $1,151,118 for government contracts at March 31, 2016 and 2015, respectively.