Inventories (Tables)

12 Months Ended

Mar. 31, 2023

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories consist of:

	March 31,
	2023			2022
Purchased parts	$	2,602,447		$	2,371,105
Work-in-process		1,388,679			962,460
Finished goods		55,052			-
Less: Allowance for obsolete inventory		(460,113	)		(513,068	)
	$	3,586,065		$	2,820,497