Type D is used in general hard rubber, resin, acrylic, glass, thermoplastic rubber, printing plate, fiber, etc.
Type A is used in general rubber, synthetic rubber, soft rubber, polyemulsion resin, leather, wax, etc.

High precision digital display
Hardness Tester
Alloy probe/fine workmanship
Specification: Type A/Type D
High-precision and sensitive side , non-destructive measurement, your measurement helper