image



Goniometer - Universal apparatus



R. Fuess, Berlin-Steglitz

Horizontal circle reflecting goniometer with covered graduated circle and vernier read-out lenses, telescope and collimator. Lacquered brass, nickel plated brass and oxidized brass. Height 39 cm, circle diameter 15 cm. Original wooden case.
Signed « R. FUESS BERLIN-STEGLITZ ».  Inventory number 35586 painted on the base, ca. 1900.

The Fuess universal apparatus is a multipurpose instrument. As depicted here it may be used for goniometric and spectrometric measurements. When the instrument is equipped with the optical parts of a polariscope, that may be inserted horizontally in collars of two vertical columns, it may be used as an axial angle apparatus. These optical parts of the polariscope are not present in the current instrument.

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


Goniometer - Universal apparatus


Goniometer - Universal apparatus




Universal apparatus as depicted in Leiss, C. (1899) Die optischen Instrumente der Firma R. Fuess, Leipzig