A more accurate measurement of Ra surface roughness can be obtained with a ____.
A) profilometer
B) caliper
C) solid square
D) vernier caliper

Question

Quizplus · Accepted Answer

A profilometer is specifically designed for measuring surface roughness, and provides a more precise and accurate measurement than a caliper or solid square. A vernier caliper can also be used for some types of roughness measurements, but a profilometer is the preferred tool.

A More Accurate Measurement of Ra Surface Roughness Can Be