1. Easy to carry 2. Simple to test 3. High ... .This apparatus has three models of Type A, Type C and Type D, and each model is subdivided into ... low and medium hardness, and high-hardness materials.Type C applies to the testing of microporous material which is used ... rubber, vulcanized rubber, soft rubber, leather, wax, etc. Type C: applicable to the hardness test of rubber microporous material.Type ...