The Watson Interferometer is a vintage microscope accessory which was manufactured by the Watson Company in Great Britain. It is a variant of Michelson interferometer that can be installed on a microscope. It consists of a beam splitter and varying the distance between the specimen surface and the image of the reference mirror creates interference fringes.

References

* Komatsu, Hiroshi; Thomas J. Fellers, Michael W. Davidson. Principles and Applications of Two-Beam Interferometry. Retrieved on 2007-02-04.

* White light interference microscope. Retrieved on 2007-02-04.