Đồng hồ đo độ cứng cao su, nhựa PTC Shore B Scale Pencil Durometer 201B
The durometer's 1/2" diameter base (1.3cm) is the smallest base permitted by ASTM D2240 specifications. This allows it to be used in confined or hard to reach areas other durometers cannot test. Type B durometers measure the hardness of skate wheels, printing platen, rubber, thermoplastic, and elastomers.