Mechanical Tubular-Rod Inside Micrometer Range 4 in to 40 in Resolution 0.001 in SPC Output No Movement of Screw 1 in Inside Micrometer Type Tubular Inside Micrometer Number of Measuring Rods 10 Number of Micrometers 1 Operation Type Mechanical Thimble Type Plain Case Included Yes Case Type Padded Case Contact Point Material Steel Contact Point Shape Curved