Consolidated Statement of Operations (USD $)	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012
Net sales	$ 11,981,000	$ 10,828,000
Cost of goods sold	7,879,000	7,909,000
Gross profit	4,102,000	2,919,000
Engineering	535,000	522,000
Selling, general and administrative	2,519,000	2,366,000
Operating Expenses	3,054,000	2,888,000
Earnings from operations	1,048,000	31,000
Interest expense, net	42,000	47,000
Gain (Loss) on Disposition of Assets	3,000	0
Earnings before provision for income taxes	1,003,000	(16,000)
Income Tax Expense (Benefit)	(218,000)	0
Net Income (Loss) Attributable to Parent	$ 1,221,000	$ (16,000)
Earnings Per Share, Basic	$ 0.23	$ 0.00