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The advantages of laser scan micrometers are their accuracy, fast scan speeds and relative ease of operation. Laser micrometers can be used for object sizing and as helpful auxiliary tools in measurement – such as measuring the displacement of delay stages more precisely.
Optical micrometers use a “shadow” measurement principle whereby collimated laser light is transmitted towards a receiver. The edges of the shadow cast by an object in the beam’s path are accurately measured by the detector array inside the receiver unit.