(1) Distance that two points are apart. Examples are thread dimensions and pitch circle diameters of concentric drillings. (2) Vehicle body movement from back to front or from front to back.

The output arm on a steering gearbox. Also known as a drop arm.

The appearance of holes or pits in a paint film while it is wet. May also refer to the damage caused by more serious rusting on steel panelwork

A simple bolt on which something pivots (turns).

The point about which something pivots!

Frame with spindles that the planet gears rotate on as part of an epicyclic gear set.

Gears that rotate around sun gears (differential, epicyclic gearing, etc.)

The act of forming and following a program to achieve a specific goal.

A flat metal plate for gauging the accuracy of a plane surface in precision metalworking, which is also known as a surface plate

A compound of resin and heavy pigments used to fill dents on car bodies.