CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS(UNAUDITED) (USD $)	3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Income Statement [Abstract]
Net sales	$ 1,351,700	$ 1,541,000
Cost of sales	887,300	937,000
Gross profit	464,400	604,000
Operating expenses:
General and administrative	279,600	290,900
Selling	156,400	189,000
Research and development	120,100	46,900
Total operating expenses	556,100	526,800
Income (loss) from operations	(91,700)	77,200
Other income (expense):
Investment income	2,900	3,600
Other income	2,500	3,200
Interest expense	(1,400)
Total Other Income	4,000	6,800
Income (loss) before income tax expense (benefit)	(87,700)	84,000
Income tax expense (benefit):
Current	(30,600)	21,200
Deferred	5,100	3,400
Total income (loss) tax expense (benefit)	(25,500)	24,600
Net income (loss)	$ (62,200)	$ 59,400
Basic earnings (loss) per common share	$ (0.05)	$ 0.05
Diluted earnings (loss) per common share	$ (0.05)	$ 0.05
Cash dividends declared per common share	$ 0.03	$ 0.05