A coordinate measuring machine (CMM) is a device that measures the geometry of physical objects by sensing discrete points on the surface of the object with a probe. Various types of probes are used in CMMs, including mechanical, optical, laser, and white light. Depending on the machine, the probe position may be manually controlled by an operator or it may be computer controlled. CMMs typically specify a probe's position in terms of its displacement from a reference position in a three-dimensional Cartesian coordinate system (i.e., with XYZ axes). In addition to moving the probe along the X, Y, and Z axes, many machines also allow the probe angle to be controlled to allow measurement of surfaces that would otherwise be unreachable.
Mansfield is a market town in Nottinghamshire, England, the main town in the District of Mansfield and Mansfield Urban Area. Mansfield gained the Royal Charter of a market town in 1227. The town lies in the Maun Valley, 12 miles (19 km) north of Nottingham, and is near Sutton-in-Ashfield. Most of the 106,556 population live within the town proper (including Mansfield Woodhouse), with Market Warsop as a secondary centre. It is the only local authority in Nottinghamshire directly to elect its mayor.