Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Mar. 31, 2019	Jun. 30, 2018
CURRENT ASSETS
Cash	$ 253,434	$ 270,313
Certificates of Deposit, plus accrued interest	153,874	153,457
Accounts Receivable, less allowance for doubtful accounts of $6,719 and $2,804 respectively	415,532	372,309
Inventories	432,156	416,621
Prepaid Expenses	343,176	171,340
TOTAL CURRENT ASSETS	1,598,172	1,384,040
PROPERTY AND EQUIPMENT, NET	482,484	512,353
OTHER ASSETS
Deposits	4,192	4,192
Inventories	149,413	160,294
Intangible Asset	17,000	17,000
Deferred Tax Asset, net valuation allowance of $ 144,348 and $133,867, respectively	227,125	280,370
	397,730	461,856
TOTAL ASSETS	2,478,386	2,358,249
CURRENT LIABILITIES
Accounts Payable	169,121	95,472
Capital Lease Liability		2,110
Accrued Expenses	193,260	228,894
TOTAL CURRENT LIABILITIES	362,381	326,476
COMMITMENTS AND CONTINGENCIES (NOTE G)
STOCKHOLDERS' EQUITY
Preferred Stock
Common Stock, no par value, 80,000,000 shares authorized; 8,087,388 and 8,077,388 shares issued and outstanding, respectively	4,444,766	4,434,766
Paid-in Capital	15,885	15,885
Accumulated Deficit	(2,471,506)	(2,555,738)
TOTAL STOCKHOLDERS' EQUITY	2,116,005	2,031,773
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	2,478,386	2,358,249
Convertible Preferred Stock [Member]
STOCKHOLDERS' EQUITY
Preferred Stock	$ 126,860	$ 136,860