What is Datum & Datum Reference Frame? (DRF)
Datum & Datum Reference Frame (DRF) The primary is the first feature contacted (minimum contact at 3 points), the secondary feature is the second feature contacted (minimum contact at 2 points), and the tertiary is the third feature contacted (minimum contact at 1 point). Contacting the three (3) datum features simultaneously establishes the three (3) …
