HP 10702A Linear Interferometer 1st Grade

This item is an HP 10702A Linear Interferometer with one HP 10703A. Retroreflector and one HP 10722 Converter Window attached. A second reflector is not included. This is the basic interferometer in the 1.5� cube factor. It consists of a polarizing beam-splitter and the corner-cube reflector. One interferometer and one detector are required for each axis in the Hewlett-Packard Laser Interferometer Distance Measurement Apparatus. The addition of the compensating converter window allows a second retroreflector to move relative to the fixed interferometer body..