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