Moulded into metal frames. Lightweight (2.5 oz) in fitted wallets. Fits right into pocket - 2 1/16 in L x 5 in W overall size. Individual specimens: 5/8 in L x 1 in W. Used by Q,C. inspectors, line supervisors, machinists, draftsmen, designers, etc.
Technical Specification
More Information
Brand
SPI
Ra µm
0.4-50
Manufacturer Part Number
6558209
Type
Micro Surface Finish Comparator Plates
Additional Information
Wallets contain durable instruction cards allowing user to assess roughness by sight and touch. Plates are marked in AA (micro inches), Ra (Am) and Rz as well as 'n' numbers.