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Darkening Accessory for Fuess goniometers



R. Fuess, Berling-Steglitz
Darkening Accessory for Fuess goniometers, lacquered brass (partly lacquered black) and plush, in its leather-covered, dark red plush-lined case. Length 16 cm.
Fits on Fuess Models II, III, IV and IVa.
Unsigned, but only made by R. Fuess, ca. 1894.

Collection: private collection

Darkening Accessory for Fuess goniometers

 
photograph on the right shows the darkening accesory mounted on the telescope of the Fuess Model IV reflecting goniometer.

Reference:
Traube, H. Eine einfache Verdunklungsvorrichtung für das Goniometer mit horizontalem Theilkreis, Neues Jahrbuch für Mineralogie, II, pp. 1-2, 1894