Wollaston type goniometer with mirror attachment

F.G. Hofmann, Paris
Wollaston type goniometer (brass and blackened brass) with mirror attachment, engraved silvered scale and vernier read-out with twin adjusting wheels and fine adjustment. Diameter circle 11.5 cm, height: 17 cm.
Signed on the circle "F.G. Hofmann | Paris", second half 19th century.

collection: Museum for the History of Sciences, Universiteit Gent, Belgium