1) Dimensional instrument 
Profilometer is a measuring instrument used to measure a surface`s profile, in order to quantify its roughness. While the historical notion of a profilometer was a device similar to a phonograph that measures a surface as the surface is moved relative to the contact profilometer`s stylus, this notion is changing with the emergence of numerous no.....
An instrument for measuring the roughness of a surface, e.g., of teeth. ... (05 Mar 2000) ... 
Type: Term Pronunciation: prō′fi-lom′ĕ-tĕr Definitions: 1. An instrument for measuring the roughness of a surface, of teeth.
An instrument used to measure the heights and depths of surface features.
a tool used in the measurement of relative surface roughness, peak to valley
a brand name for a device that measures the roughness of a surface.