AHYJR Surface Roughness Standards 30pcs Surface Roughness Gauges Set with Ra0.05-12.5um for Surface Roughness Tester Surface Roughness Gauge

● Kit No. 16008 Includes special wallet and instructions and free charts, related CLA, AA and Ra Values Plus I.S.O. “N” scale

● Overall size is 6 inches X 3 inches

● Ideal for the drafting office, engineering department or small store

● This kit has 30 specimens, each 7/8“ x 3/8”

● and contains:3 Specimen Flat Grinding - 2, 4, and 8μ“ AA 3 Specimen Reaming - 16, 32, and 63μ” AA 6 Specimen Grinding - 2, 4, 8, 16, 32, and 63μ“ AA 6 Specimen Horizontal Milling - 16 , 32, 32, 63, 125, 250, and 500μ” AA 6 Specimen Vertical Milling - 16, 32, 63, 125, 250 and 500μ“ AA 6 Specimen Turning - 16, 32, 63, 125, 250 and 500μ” AA Specifications meet S.A.E.

● and military specifications for visual and tactile inspection. FEATURES:Our economical composite kit 16008 shown contains 30 samples of 7/8“ x 3/8” electroformed solid nickel.

● Each type of surface finish, such as flat tapping, reaming, grinding, horizontal milling, vertical milling, and turning, is truly and consistently reproduced to give the operator or designer a realistic idea of the feel, look, and texture of the machined part.

● Each set includes a set of instructions

● This kit, or our personal (larger) standard specimen scale set, allows for quick and easy comparisons, eliminating costly inspection methods, saving valuable production time, and stopping scrap production due to poor surface quality

● Manufactured in accordance with ANSI-B-46.1-1985 standards and made of solid electroformed nickel

● A truly international set, marked in AA (micro inches) and Ra (microns) metric units