Consolidated Statement of Operations (USD $)	12 Months Ended
	Apr. 30, 2014	Apr. 30, 2013
Net sales	$ 13,100,000	$ 11,981,000
Cost of goods sold	8,508,000	7,879,000
Gross profit	4,592,000	4,102,000
Engineering	602,000	535,000
Selling, general and administrative	3,187,000	2,519,000
Operating Expenses	3,789,000	3,054,000
Earnings from operations	803,000	1,048,000
Interest expense, net	34,000	42,000
Gain (Loss) on Disposition of Assets	0	3,000
Earnings before provision for income taxes	769,000	1,003,000
Income Tax Expense (Benefit)	(103,000)	(218,000)
Net Income (Loss) Attributable to Parent	$ 872,000	$ 1,221,000
Earnings Per Share, Basic	$ 0.15	$ 0.23