CYLINDRICAL GRINDING COMPARATOR

Made in U.S.A.
4 MODELS - INCH AND METRIC
MADE OF SOLID NICKEL

Furnished in attractive vinyl case with instructions.
Each model has 10 specimens:
5 each Internal Diameter (concave) and 5 each Outside Diameter (convex)

Cylindrical Grinding Comparator
10 Specimens - (shows I.D. and O.D.)
5 each I.D. (concave) 4, 8, 16, 32 and 63 Ra
5 each O.D. (convex) 4, 8, 16, 32 and 63 Ra

Model No. 16042, Cylindrical Grinding Comparator (in microinches)