Hand spectroscope

Carl Zeiss, Jena
Nickel plated brass and oxidized brass hand spectroscope (length 10 cm) and its dark blue plush-lined leather-covered case.
Signed "Carl Zeiss | Jena | Nr 21200", ca 1930.

collection: Museum for the History of Sciences, Universiteit Gent, Belgium (inventory number: MW 95/785)