1Easy to use, accurate measurement, easy to carry, durable and stable, practical and strong 2This rubber hardness tester is a measure of sulfur rubber and plastic products of hardness of the instrument 3Made of alloy material,waterproof not rust,fine workman,durable 4The connecting device is more convenient to use with the frame 5Type D is suitable for general hard rubber, resin, acrylic, glass, thermoplastic rubber, printing plate, fiber etc Features:Easy to use, accurate measurement, easy to carry, durable and stable, practical and strong.This rubber hardness tester is a measure of sulfur rubber and plastic products of hardness of the instrument.Made of alloy material,waterproof not rust,fine workman,durable.The dial scale 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, poly fat, leather, wax etc.The type O is suitable for the micro-porous materials made of foaming agent in the plastic.Type D is suitable for general hard rubber, resin, acrylic, glass, thermoplastic rubber, printing plate, fiber etc.Specifications:Type(Optional): A, O, D Dial value: 0-100 degrees Pressure needle trip: 0-2.5 mm Pressure needle end pressure:A/O type: 0.55 N - 8.06 N,D-type: 0-44.5 N Accuracy: 0.1 mm Test force: 0.5 N Size: 78 * 52 * 22 mm/3.07*2.05*0.87inch Weight: 200 gInstructions:The sample on strong plane, take the hardness tester, pressure needle distance sample at least 12mm edge smooth put pressure on foot pressure in the sample, makes theneedle vertical pressure into the sample, until the feet and samplecompletely contact pressure when within 1 s reading. Measuring at least 6 mm apart in different positions of the measurement hardness value 5times, take the average (micro porous materials are measuring at least15 mm). In order to stabilize determination conditions, to enhancedetermination accuracy, hardness tester device should be in the samedetermination on supporting producer determination.Package Included:1 xRubber Tire Durometer Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.