Product Description
This appears to be some sort of interferometer unit for use in a metrology laser distance measurement system. There are two numbers on the part, on one face is 9202, and on the opposite face is 2002-2. There is a fiber optic coupler (FC connector?) on one face, and on the opposite side is a modestly sized aperture. There is a third aperture on one of the two remaining narrow faces.
When looking in the larger aperture the two other apertures are seen side-by-side. This unit lacks the magnetic alignment mirror (present on the other unit we have in stock).
Zygo did manufacture a laser interferometry distance measurement system similar to the well-known Hewlett Packard system, and in fact many components could be directly substituted. This does not appear to be a current product, but dimensionally closely resembles the Compact 1-axis HSPMI Interferometer. It is in superb condition - indeed it looks almost unused.
Photo set 1415