Key Features

• Each type of surface finish, such as flat lapping, reaming, grinding, horizontal milling, vertical
• A truly international set with markings in AA (microinches) and Metric IN Ra (micrometers).
• A set of instructions is included with each set.
• Manufactured to ANSI-B-46.1-1985.
• Now available with individual serialized calibration report traceable to NIST.

Product Description

Surface Roughness Standards Composite Set - Complete with Long Form Calibration Report Traceable to N.I.S.T. Includes special wallet and instructions, as well as free graph, which correlates CLA, AA, and Ra values, plus I.S.O. "N" scale (overall size 6" x 3")