... apparatus has three models of Type A, Type C and Type D, and each model is subdivided ... of single pointer and double pointer.Type A and D respectively are applicable to the testing of ... 80, hg/t2489-93, JJG304-2003.Attention:Type A: applicable to general rubber, synthetic rubber, vulcanized rubber ... to the hardness test of rubber microporous material.Type D: applicable to hard rubber, hard resin, acrylic, ...