ASME B46.1 Surface Finish Gauges

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30-Swatch Scale

Compare your surface finish to one of the swatches on these scales. The finishes are expressed in microinches (µ").

30-swatch scale comes with a chart to correlate the finishes with CLA and ISO N scales.

No. of Swatches	Scale	For Surface Type	Surface Finish Range, microinch	Lg.	Wd.	Material	Specifications Met		Each

30	AA, Ra	Ground, Lapped, Milled, Reamed, Turned	2-500	3"	6"	Nickel Alloy	ASME B46.1	0000000	0000000