Squareness of both V grooves to front and back sides: 197_in
Hold cylindrical workpieces for inspection and machining.
Two V-blocks per set.
Made of alloy steel.
Hardened to HRC60?2.
V groove on the top for large shafts.
V groove on the bottom for small shafts (except 6896-10).

Insize QMS-A320-U, QUICK MEASUREMENT SYSTEM, 6974029775123
3M 14197, Roloc Disc Pad TP, Medium 2 in 1/4-20 Internal, 7000119311 