This mechanical inside micrometer provides a 4 to 5 in measurement range with 0.0002 in graduation and 0.000250 in accuracy. It incorporates a ratchet stop thimble for consistent measurements and stable, micrometer-based movement. Designed for precise internal diameter (ID) measurements, it utilizes a highly stable three-point self-centering action with three anvils evenly spaced at 120 degrees.
- Highly stable three-point self-centering action
- Three anvils evenly spaced at 120 degrees for accurate ID measurement
- Measurement can be taken closer to the bottom of blind bores
- Can measure deep holes using an extension rod (optional)
- Contact points and cone are made from an alloy tool steel with a hardness of HRC60.5 or more
- Micrometer-based movement
- Stable design
- Includes plastic case