Condensed Consolidated Statements of Operations (Unaudited) (USD $)	3 Months Ended		9 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012	Mar. 31, 2011
Condensed Consolidated Statements Of Operations
Net sales	$ 1,519,500	$ 1,460,300	$ 4,258,000	$ 4,747,200
Cost of goods sold	920,500	863,500	2,564,700	2,772,500
Gross profit	599,000	596,800	1,693,300	1,974,700
Operating expenses:
General and administrative	318,900	282,800	945,000	879,800
Selling	170,800	159,000	519,800	502,300
Research and development	125,000	90,300	250,500	267,700
Total operating expenses	614,700	532,100	1,715,300	1,649,800
Income (loss) from operations	(15,700)	64,700	(22,000)	324,900
Other income:
Interest & other income, net	4,300	9,800	16,100	25,400
Income before income taxes	(11,400)	74,500	(5,900)	350,300
Income tax expense (benefit):
Current	(2,900)	19,300	(3,400)	113,100
Deferred	(300)	(5,000)	1,700	(14,800)
Total	(3,200)	14,300	(1,700)	98,300
Net income (loss)	$ (8,200)	$ 60,200	$ (4,200)	$ 252,000
Basic earnings per common share	$ (0.01)	$ 0.05	$ 0	$ 0.21
Diluted earnings per common share	$ (0.01)	$ 0.05	$ 0	$ 0.21
Cash dividends declared per common share	$ 0	$ 0	$ 0.05	$ 0.09