... soft rubber,printer roller and other elastomer material.(ASTM--D--2240)Shore D DurometerIt is designed for testing the hardness of hard ... as:thermoplastic plastics,bowling,plastic floor and so on.(ASTM--D--2240)Shore O DurometerIt is designed for the hardness ... material,spinning trunk rotation and soft grain structure materials.(ASTM--D--2240) II.Parameters: Model ForcePressure Shape of measuring head ...