This rubber hardness tester is a measurement of sulfur rubber and plastic products of instrument hardness Easy to operate, accurate measurement, easy to carry, durable and stable, practical and strong Made of alloy material, waterproof waterproof not rust, fine workmanship, durable The connecting device is more convenient to use with the frame Type A is suitable for general rubber, synthetic rubber, soft rubber, poly grease, leather, wax etc Specifications:   Kind : A Dial Value: 0-100 degrees Pressure needle trigger: 0-2.5mm Needle Tip Pressure:   A/O type: 0.55N - 8.06N, Type D: 0-44.5N Accuracy: 0.1mm Test Force: 0.5N Size: 78 * 52 * 22mm/3.07 * 2.05 * 0.87in Weight: 200g Instructions:    The sample on a solid plane, take the hardness tester, the pressure needle distance sample of at least 12mm smooth edge exert pressure on the foot pressure in the sample, exert pressure vertical of the needle in the sample, until the feet and the sample come into full contact pressure within 1 s of reading. By measuring at least 6mm away in different positions of the hardness value measurement 5 times, take the average (microporous materials are at least 15mm). In order to stabilize the determination conditions, to improve the accuracy of the determination, the hardness testing device should be in the same determination on the determination of the producer.   Package included:   1 x Rubber Tire Durometer Note: The data is all manual measurement, please allow 1 - 3cm error, due to the light and display difference, it there will be some color difference, depending on the physical object received Delivery Quantity: (according to the main picture)