SPI Micro Surface Finish Comparator Plates, Polishing - 14-451-9

Material: Solid Electroformed Nickel

Features:

• Molded into metal frames
• Lightweight (2.5 oz) in fitted wallets
• Fits right into pocket - 2-1/16" L x 5" W overall size
• Individual specimens: 5/8" L x 1" W
• Used by Q,C. inspectors, line supervisors, machinists, draftsmen, designers, etc.
• Wallets contain durable instruction cards allowing user to assess roughness by sight and touch
• Plates are marked in AA (micro inches), Ra (μm) and Rz as well as "N" numbers
• All plates conform to SAE and MIL Specs. Manufactured to ANSI-B-46.1-1978. Military Standard 45662.

Specifications:

See all SPI Micro Surface Finish Comparator Plates