Features:<br> Easy to use, accurate measurement, easy to carry, sturdy and stable, practical and strong.<br> This rubber hardness tester is a measure of sulfur rubber and plastic products of hardness of the instrument.<br> Made of alloy material,waterproof not rust,fine workmanship,sturdy.<br> The dial scale is clear and the degree is more intuitive and convenient.<br> The connecting device is more convenient to use with the frame.<br> Type A is suitable for general rubber, synthetic rubber, soft rubber, poly fat, leather, wax etc.<br> Specifications:<br> Type(Optional): A, O, D<br> Dial value: 0-100 degrees<br> Pressure needle trip: 0-2.5 mm<br> Pressure needle end pressure:<br> A/O type: 0.55 N - 8.06 N,<br> D-type: 0-44.5 N<br> Accuracy: 0.1 mm<br> Test force: 0.5 N<br> Size: 78 * 52 * 22 mm/3.07*2.05*0.87inch<br> Weight: 200 g<br> Instructions:<br> The sample on strong plane,<br> take the hardness tester, pressure needle distance sample at least 12<br> mm edge smooth put pressure on foot pressure in the sample, makes the<br> needle vertical pressure into the sample, until the feet and sample<br> completely contact pressure when within 1 s reading. Measuring at least 6<br> mm apart in different positions of the measurement hardness value 5<br> times, take the average (micro porous materials are measuring at least<br> 15 mm). In order to stabilize determination conditions, to enhance<br> determination accuracy, hardness tester device should be in the same<br> determination on supporting producer determination.<br> Package Included:<br> 1 x Rubber Tire Durometer<br> .