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MSC SPI Surface Finish Comparator, 0.8 to 100 Ra μm, Nickel, 8 Specimens, 1 ea
This surface finish comparator provides a reliable, portable solution for assessing surface roughness by sight and touch. Designed for machinists, inspectors, and designers, it contains eight specimens representing specific surface finishes, enabling accurate comparisons against machined parts.
- Features eight individual specimens for shaping or planing assessment
- Constructed from solid electroformed nickel for durability
- Includes a protective case with instruction cards for field use
- Marked in AA (micro inches), Ra (μm), Rz, and N numbers for versatility
- Conforms to SAE, ANSI-B-46.1-1978, and military specifications
- Individual specimen dimensions: 1.59 cm x 2.54 cm (5/8 in. x 1 in.)
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