CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Revenues	$ 1,444,500	$ 1,662,100
Cost of sales	849,400	1,161,900
Gross profit	595,100	500,200
Operating expenses:
General & administrative	408,200	326,500
Selling	167,000	295,300
Research & development	85,400	107,100
Total operating expenses	660,600	728,900
Loss from operations	(65,500)	(228,700)
Other income (expense):
Investment income	400	800
Other income (expense)	(4,700)	6,200
Interest expense	(8,100)	(1,200)
Total other income, (expense) net	(12,400)	5,800
Loss before income tax benefit	(77,900)	(222,900)
Income tax expense (benefit): Current	0	(57,200)
Income tax expense (benefit): Deferred	(17,800)	(4,400)
Total income tax benefit	(17,800)	(61,600)
Net loss	$ (60,100)	$ (161,300)
Basic earnings (loss) per common share	$ (.04)	$ (.11)
Diluted earnings (loss) per common share	$ (.04)	$ (.11)