FOR TRUE ACCURACY IN SETTING 
ANY APPLICABLE INTERNAL DEVICE.
THE NEW CONCEPT IN MASTER
SETTING RINGS.....
Guaranteed to � .0001 accuracy.
Extra long gaging length.
10 micro finish or better.
Hardened, 58-60 RC.
Light weight
Feature color coded aluminum heat shield
Ideal setting rings for dial bore gages, groove
gages, air gages, micrometers, vernier calipers, etc.