5/16 - 1/2" Telescoping Gage
Model #: GA-5121
- Range: 5/16 - 1/2
- Overall Length: 4.20"
- Available from 5/16" to 6"
- Double Action self-centering for quick checking of inside measurements.
- Uniform contact pressure.
Gage expands in hole to be measured, can be locked in place and gage is removed from hole.
Final hole size is obtained by measuring over contacts with a micrometer.
Contact Points are of hardened tool steel and precision ground on the end measuring radius.