Wollaston type goniometer
Böhm & Wiedemann, München [replica]
Wollaston type goniometer (brass) with engraved scale and vernier read-out with twin adjusting wheels, raised on an inverted V-frame, on wooden base, stored under glass dome. Diameter circle: 11 cm. Height goniometer: 13 cm, total height including base and glass dome: 16 cm. Signed on circle: "Böhm & Wiedemann | München | No. 16" (part of a series numbered 1 to 25), ca. 1990.