Đồng hồ đo độ cứng cao su, nhựa PTC Shore A Scale Classic Durometer 306L
The Model 306L Type A Durometer 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.