Mechanical 3-Point Inside Micrometer Range 5 in to 6 in Resolution 0.0002 in SPC Output No Movement of Screw 1 in Inside Micrometer Type 3-Point Inside Micrometer Number of Measuring Rods 1 Number of Micrometers 1 Operation Type Mechanical Thimble Type Ratchet Case Included Yes Case Type Plastic Case Contact Point Material Carbide Contact Point Shape Curved Features Ratchet Stop Included Certification Inspection Certificate Includes 6 in Extension Rod Lock Nut Type Ratchet Stop