Used with standard outside micrometers with spindle .256″DIA to measure pitch diameter of screw threads.
Diameter accuracy: ?20_in. Cylindricity: 39_in.
Cylindricity: 1um. Hardness: HRC60.
Supplied with manufacturer inspection certificate.
Supplied with manufacturer inspection certificate.

Insize 7231, SCRIBER, 6928640320071
Dynabrade 78122 2" Dia. Medium NWN DynaBrite Locking-Type Disc, 25/pack
3M 29824, Sanding Screen, 80 Grit, 20 in x NH, 7100160247
Dynabrade 96101 Dynabrade Air Lube 10W/NR 24 Per Box
3M 22397, Roloc Disc 361F, 60 YF-weight, TR, 1-1/2 in x NH, 7000045097
Dynabrade 78318 2" Dia. x 1" W x 1/4" Shank, Very Fine, NWN DynaBrite Wheel, 10/pack
3M 918, Disc Pad Holder, 8 in x 5/16 in x 3/8 in 5/8-11 Internal, 7000120891 