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″.

Dynabrade 57113 Rotor/Vane Set
Dynabrade 15336 Rubber Drive Wheel
Dynabrade 52725 1 hp Straight-Line Extension Polisher, 1 HP, 4,500 RPM, 1/2"-20 Spindle Thread
Dynabrade 51459 6"-8" Dia. Right Angle Two-Hand Rotary Buffer, .7 hp, 2,500 RPM, Rear Exhaust, 5/8"-11 Spindle Thread
Dynabrade 18426 Vane Set (4pk)
Dynabrade 01480 Vane Set (4pk)
3M 34120, Perfect-It Random Orbital Wool Compounding Pad 34120, Coarse, White, 5 in (130 mm), 2 Pads/Bag, 6 Bags/Case, 7100276851
Dynabrade 13509 Dynastraight Finishing Tool, Rear Exhaust, 6,000 RPM, 5/8" (16 mm) or 1" (25 mm) Dia. Arbor
Dynabrade 64350 26" W x 36" L (660 mm W x 914 mm L) Metal Capture Downdraft Station, 230 V (AC) 