Characteristics: Easy to use, accurate measurement, easy to carry, durable and stable, practical and strong. This rubber hardness tester is used to measure the hardness of the sulfur rubber and plastic instrument. Made of alloy, waterproof, not rusting, excellent workmanship, durable. The Skala of the knob is clear and the degree is more intuitive and convenient. The connecting device is more convenient to use with the frame. Type A is suitable for general rubber, synthetic rubber, soft rubber, multilayer fats, leather, wax, etc. Specifications: Type: A Dial value: 0-100 degrees Pressure needle release: 0-2,5 mm Final pressure of the pressure needle: Type A: 0,55 N - 8,06 N, Accuracy: 0,1 mm Test Force: 0,5 N. Size: 78 * 52 * 22 mm / 3,07 * 2,05 * 0,87 inch Weight: 200 g Instructions: Sample on a strong plane, take a hardness tester, press the sample with a needle distance of at least 12 mm smooth edge, press on the foot pressure in the sample, causes the needle to vertical pressure on the sample until the feet and sample completely press when at a distance of 1 reads. Measuring at least 6 mm apart in different positions, the hardness measurement value 5 times, take the average (microporous materials are at least 15 mm). In order to stabilise the determination conditions, in order to increase the accuracy of the determination, the hardness test device shall be in the same marking on the basis of the manufacturer's designation.