Kirchhoff Bunsen-type spectroscope

A Kruss Hamburg
The spectroscope is made of lacquered brass supported on a black three-legged steel base (total height: 31.75 cm). The prism is housed in het central circular chamber with removable top. The 20 cm long viewing telescope has three motion controls to observe the spectrum. The collimating tube (15 cm long) has two adjustable slits allowing the analysis of two different light sources at the same time. A small tube holds a graduated scale to be projected on top of the spectrum.
Signed A Kruss Hamburg, ca 1900

See MM Instruments for more details on this instrument

collection Mark McElyea