Simplified Kohlrausch total reflectometer

R. Fuess Berlin-Steglitz
Simplified immersion Kohlrausch total reflectometer (brass, nickel plated brass and blackened triangular cast iron base).
The upper part carries a divided circle (9cm diameter) with vernier and a lateral read out lens. The axis of the graduated circle ends with a crystal holder which may be immersed in a liquid contained in a detachable glass flask (here broken). The observation telescope is horizontally disposed in a collar of the vertical column.
Signed "R. Fuess Berlin-Steglitz". Old inventory numbers IVd83, 1473 and much recent 36050 (written with white paint on the base). ca. 1900.

collection: Museum of Mineralogy, Babes-Bolyai University, Romania