Sheffield Measurement Precision Reference Specimens for Profilometer

General electric standard roughness specimens 8651831G2

Taylor Hobson Surtronic 3 Surface Profilometer Roughness Tester

Rare Vintage GE Standard Roughness Specimens (Cat. 8651831G2)

Vintage General Electric Standard Roughness Specimens #8651831G1

Rubert & Co Cylindrical Turning Scale No. 120 Roughness Specimens Comparator

SPI Microsurf 326 Linishing 0.2-6.3RA Nickel surface Comparator 6 specimens

Moore & Wright 492 PRO Imperial Feeler Gauge 15 Blades Sheffield England 1.5 25