Digital A/C/D Durometer Rubber Tire Hardness Tester Meter Portable Tool Features: Different models: There are three different models for you to choose, including A, C and D. You can poke the testing item to decide what kind of models you need to pick. After being poked, the item which has trace is suitable for model A, and the item which has no trace is suitable for model D. Foaming material is suitable for model C. Alloy testing needle: Different model has different types of testing needle, the touching area also is different. LCD screen: The digital hardness tester can display the data clearly and easy to read. Data lock: The digital hardness tester owns a button which can lock the data number, which is convenient for users to record the data. Durable: The digital hardness tester adopts high quality plastic and metal material, which is durable and can be used for long time. Specification: Type:  A/C/D Material: ABS + Metal Color: Black Testing arrange: 0-100h(ACD) Resolution: 0.5H(ACD) Needle stroke: 0.79mm,2.5mm,0.1mm Reflect time: 1 second Battery: 1.5V button battery(included) Size: 57mm x 84mm x 26mm Package includes: 1PCS Digital Hardness Tester