The SP1500 C interferometer from SIOS Messtechnik GmbH has a measuring range of > 15 m and has been designed for high-precision length, angle, and straightness measurements of linear axes. It uses a rotatable measuring reflector consisting of hollow retro reflectors and a rotatable Wollaston prism. Calibration software and a USB interface are included.
Armstrong Optical
Northampton, Northamptonshire, England
www.armstrongoptical.co.uk