Đồng hồ đo độ cứng cao su, nhựa PTC Shore C Scale Pencil Durometer 202C
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 C durometers measure the hardness of textile windings, rolled threads, rolled films, medium hard rubbers and plastics.