Mechanical 3-Point Inside Micrometer Range 1.6 in to 2 in Resolution 0.0001 in SPC Output No Movement of Screw 1 in Inside Micrometer Type 3-Point Inside Micrometer Number of Measuring Rods 0 Number of Micrometers 1 Operation Type Mechanical Thimble Type Ratchet Case Included Yes Contact Point Material Steel Contact Point Shape Curved