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CMM

​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.

​Ilkeston is a town in the Borough of Erewash, Derbyshire, England, on the River Erewash, from which the borough takes its name, with a population at the 2011 census of 38,640.[2] Its major industries, coal mining, iron working and lace making/textiles, have now all but disappeared.

The town is close to both Derby and Nottingham and is near the M1 motorway and the border with Nottinghamshire. The eastern boundary of Ilkeston is only two miles from Nottingham's western edge and it is part of the Nottingham Urban Area.

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