Linear measurements can be made, using interferometry, at multiple points along an axis to measure either linear displacement or velocity. These linear displacement measurements can be used to assess the capabilities of a machine to position to a target, with information relating to repeatability and errors due to direction of approach (backlash, lost motion) if multiple bi-directional approaches are performed. In some cases, such as CNC machine tools or Digital Read Out positioning systems can be error compensated to improve accuracy. During the measurements the beam path cannot be broken as the interferometery measurement method relies on change in displacement. The interferometer and reflectors are mounted within thermally stable and durable stainless steel cases.

Linear Measurement Kit (55280B)