Gray iron is a good material for machine parts because of its ____________________ resistance.

A Ø30 H8/f7 fit symbol designates _________________________ basis.

Part numbers are used to order parts and to ____________________.

The only way to check circular or total runout is to hold the part between centers positioned precisely on each end of the datum axis on each end of the part.

Another name for a three-plane datum system is __________________________________________________.

Cutting data for gear teeth are given in a note or ____________________.