- Item Features
- Standards
- Provides quick, accurate measurement of O.D., I.D. and depth
- Sharp, clear dial graduations
- Sharp, black graduations on the satin finished bar
- Lock screws for sliding jaw and dial bezel
- Adjustable bezel
- Thumb-operated fine adjustment roll
- Hardened stainless steel bar, measuring surfaces, rack, gears and depth rod
- Knife-edge contacts
- Positive, spring loaded double pinion anti-backlash control
- Covered rack depth rod
- https://youtu.be/itH7nwjixNs
U.S. Federal Spec