Measuring process to determine whether the dimensions or characteristic is larger or smaller than the established standard or range of acceptability.

Profile milling of gears by using a worm-like milling cutter referred to as a hob.

An abrasive wheel with a cutting surface too smooth (or dull) to grind efficiently.

The strength of bonding of a grinding wheel.

A precision finishing machining process which uses an abrasive tool rotating at a high rate of speed.

The ratio of volume of metal removed by grinding over the volume of wheel wear. It is a measure of the effectiveness of the grinding operation.

Identifies the size of abrasive grains in numbers where 10 is very coarse and 500 is very fine.

A term used when drilling deep holes. The drilling tool has oil holes for using high pressure coolants.