1. Establish that this is the most excellent instrument you have available for the exact measurement. Do not use basically because it is handy.
2. In detail clean both the part and the caliper. (Make it a practice to repeatedly make sure all contact surfaces of the part and the apparatus for burrs or other obstructions.)
3. […]

In 1631 the French mathematician-inventor Pierre Vernier invented the measurement principle which put up with his name. The Vernier scale has a stunning simplicity, and sooner modified in to a vernier micrometer in order working out the dilemma of reading fractions of small divisions on a measuring scale.
Presume the main scale of a length measuring […]