Wollaston type goniometer with mirror attachment

 

Secretan, 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. Lead filled brass base with 3 screw leveling feet. Diameter circle 12 cm, height: 20 cm.
Signed on the mirror attachment "SECRETAN | PARIS", and on a trade label to the lid of the case. Ca. 1880.

private collection
Photographs courtesy of Fleaglass.com

Wollaston type goniometer, Secretan, Paris

Wollaston type goniometer, Secretan, Paris

Wollaston type goniometer, Secretan, Paris

Wollaston type goniometer, Secretan, Paris

Wollaston type goniometer, Secretan, Paris

Wollaston type goniometer, Secretan, Paris

Wollaston type goniometer, Secretan, Paris