The Watson interferometer is a vintage microscope accessory (for use only in reflected light microscopy) which was manufactured by the Watson Company in Great Britain. It is a variant of Michelson interferometer that can be installed on a conventional microscope.
The Watson interferometer is an old optical accessory used for reflected light microscopy, produced by the Watson Company in the UK. Its functionality is comparable to that of the Michelson interferometer, which can be attached to a typical microscope.