Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Operating activities:
Net income	$ 66,100	$ 227,600
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	185,900	188,400
Deferred income taxe (benefit)	(19,700)	(24,900)
Income tax benefit of stock options exercised	600
Loss on disposal of asset		4,600
Loss on sale of investment securities	1,000
Stock-based compensation	7,000	21,300
Changes in operating assets and liabilities:
Trade Accounts receivable	(3,500)	874,500
Inventories	26,100	(367,200)
Prepaid expenses and other current assets	29,900	(110,500)
Accounts payable	(13,300)	(99,600)
Customer advances	98,500
Accrued expenses and taxes	(46,800)	(61,700)
Total adjustments	265,700	424,900
Net cash provided by operating activities	331,800	652,500
Investing activities:
Additional consideration for acquisition of Altamira Instruments, Inc.		(182,600)
Payments for Intangible assets acquired in acquisition (note 2)	(260,000)
Purchase of investment securities, available for sale	(10,900)	(14,000)
Redemption of investment securities, available for sale	800
Capital expenditures	(75,300)	(63,600)
Purchase of intangible assets, other	(4,900)	(9,500)
Net cash used in investing activities	(350,300)	(269,700)
Financing activities:
Line of credit proceeds	60,000
Line of credit repayments	(60,000)
Payments for contingent consideration	(20,600)
Proceeds from exercise of stock options	9,600
Cash dividend declared and paid	(59,800)	(107,700)
Principal payments on note payable	(49,200)
Net cash used in financing activities	(120,000)	(107,700)
Net increase (decrease) in cash and cash equivalents	(138,500)	275,100
Cash and cash equivalents, beginning of year	907,800	632,700
Cash and cash equivalents, end of year	769,300	907,800
Supplemental disclosures of cash flow information:
Cash paid for income taxes	3,200	298,500
Cash paid for interest	$ 4,600