Đồng hồ đo độ cứng cao su, nhựa PTC Shore O Scale e2000 Durometer 501/O
Type O durometers measure the hardness of soft printing rollers, nylon, rayon, orlon, artgume, and textile windings.
All durometers come complete with precision aircraft aluminum test block and carrying case. The test blocks are color-coded to match the durometer type. The blocks will read within ±1 point of a properly functioning durometer.