For zero setting of inside micrometers, three points internal micrometers and bore gages.
Deviation is the difference between the ordered size and the size marked on the setting ring when supplied.
For example, the ordered size is .2”, the size marked on the setting ring when supplied may be .20008″.
setting ring when supplied may be .20008″.

Insize ISY-700-90021, CLAMPING SCREW, 6940561980790
Dynabrade 79099 1/2" W x 12" L 36 Grit DynaCut Premium Ceramic Belts, 50/pack
Dynabrade 07107 Vane Set (5pk)
Dynabrade 11005 Dynafile Belt Housing Guard
Dynabrade 01185 Vane Set (4pk) 