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″.

3M 29824, Sanding Screen, 80 Grit, 20 in x NH, 7100160247
Dynabrade 95821 Dynabrade Air Lube 10W/NR, 4oz Bottle
Insize 1188-150AWL, DIGITAL BLADE CALIPER, 0-6"/0-150mm, built-in wireless, 6940561942606
3M 26137, PPS Series 2.0 Adapter, Type S41, Trapezoidal Thread - QCC, 7100135947 