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Grind Block Roughness Comparator 8 Ra

Visual Tactile Grind Block Surface Roughness Comparator 8 Ra

Visual Tactile Surface Roughness Comparator, Hone, Lap and Grind Precision Reference Specimen (1-3/8" x 1-7/8") with replicated surface roughness 8 micro-inches in height. Each specimen is identified with its arthmetic average roughness height rating.

Functional Usage:

Place the block alongside the workpiece and draw the tip of the fingernail across the surface at right angles to the tool mark. The feel of the fingernail contact must be the same if the finishes are identical.

This MICROFINISH COMPARATOR Surface Roughness Scale is produced with the highest engineering skill and precision workmanship.

IMAGE - 125 RA Shown

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