trades > fabrication
document updated 9 years ago, on Aug 9, 2014

Metrology covers all the different ways that precision measurements are made, and how they're used to ensure that the work piece is within acceptable tolerances.

(any kind of precise measurement can fall under "metrology", including length / mass / time / current / temperature, however this page only covers geometric metrology — measurement of length/angle)

high-level practices

important concepts

reference objects and hand tools