Property, Plant and Equipment (Details) (USD $)	Jun. 30, 2012	Jun. 30, 2011
Machinery and equipment	$ 1,807,649	$ 1,758,993
Furniture and fixtures	1,115,039	1,091,637
Automobiles	22,328	29,124
Leasehold improvements	443,233	438,245
Demonstration and consignment inventory	1,290,590	1,101,467
Property, Plant and Equipment, Gross	4,678,839	4,419,466
Less: accumulated depreciation and amortization	(3,787,017)	(3,450,130)
Property, plant and equipment, net	$ 891,822	$ 969,336

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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