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electronic profilometer
An electronic tool used for measuring surface roughness.

The diamond-point stylus of a permanent-magnet dynamic pickup is moved over the surface being checked out, and the resulting varying voltage is amplified, corrected, and measured with a meter calibrated to read directly in micro-inches of deviations or differences from the smoothness desired.

This entry is located in the following unit: electro-, electr-, electri- (page 67)