The Model 306L Type A is designed to measure ASTM (American Society for Testing and Materials) D2240 Type A hardness.

This includes materials such as: rubber, elastomers, and other rubber-like materials including neoprene, silicone, santoprene, vinyl, and butyl. Soft plastics, felt, leather, and similar materials generally fall into this same range. PTC® s Model 306L meets or exceeds current ASTM D2240 Specifications. The instrument has a low glare aluminum dial with bold, easy to read numbers. The durometer comes standard with a Max Hold hand which retains the peak reading. A top knob with 8-32 threads permits both easy handheld use and attachment to test stands or the accessory Model 441 1kg Constant Load Deadweight. The Model 441 will allow even more consistent measurements when taking readings. Each instrument is individually calibrated. A test block and sturdy carrying case are included with the durometer.  

Specifications

 

Scale	SHORE A	SHORE A HALF POINT	SHORE B	SHORE C	SHORE D
Model	306L	306L.5	306BL	307CL	307L
Range			0-100 points	0-100 points	0-100 points
Accuracy of	±1 Point	±1/2 Point	±1 Point	±1 Point	±1 Point
Height	4 in. (10.2 cm)	4 in. (10.2 cm)	4 in. (10.2 cm)	4 in. (10.2 cm)	4 in. (10.2 cm)
Width	2-1/4 in. (5.7 cm)	2-1/4 in. (5.7 cm)	2-1/4 in. (5.7 cm)	2-1/4 in. (5.7 cm)	2-1/4 in. (5.7 cm)
Depth	1-3/4 in. (4.4 cm)	1-3/4 in. (4.4 cm)	1-3/4 in. (4.4 cm)	1-3/4 in. (4.4 cm)	1-3/4 in. (4.4 cm)
Weight	8 oz. (227 g)	8 oz. (227 g)	8 oz. (227 g)	8 oz. (227 g)	8 oz. (227 g)
Shipping weight	3lb (1.4kg)	3lb (1.4kg)	3lb (1.4kg)	3lb (1.4kg)	3lb (1.4kg)