Wollaston type goniometer

 

unsigned
Early Wollaston type goniometer (brass) with engraved scale and vernier read-out with twin adjusting wheels, raised on an inverted V-frame, on mahogany plinth base. Diameter circle 10 cm.
Unsigned, but supposed to be of Italian origin. First half 19th century.

private collection

Wollaston type goniometer, unsigned

Wollaston type goniometer, unsigned

Wollaston type goniometer, unsigned