Consolidated Statements of Operations (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Income Statement [Abstract]
Net sales	$ 6,202,600	$ 5,869,800
Cost of goods sold	3,845,200	3,461,000
Gross profit	2,357,400	2,408,800
Operating expenses:
General and administrative	1,230,600	1,175,100
Selling	714,200	638,500
Research and development	375,900	324,400
Total operating expenses	2,320,700	2,138,000
Income from operations	36,700	270,800
Other income:
Interest income	12,800	21,900
Other income	17,000	14,500
Interest expense	(4,600)
Total Other Income	25,200	36,400
Income before income taxes	61,900	307,200
Income tax expense (benefit):
Current	15,500	104,500
Deferred	(19,700)	(24,900)
Total income tax expense (benefit)	(4,200)	79,600
Net income	$ 66,100	$ 227,600
Basic earnings per common share	$ 0.05	$ 0.19
Diluted earnings per common share	$ 0.05	$ 0.19
Weighted average common shares outstanding, basic	1,283,118	1,196,577
Weighted average common shares outstanding, assuming dilution	1,293,589	1,213,482