Ocular goniometer

 

Beck, London
Ocular goniometer, chrome plated brass with engraved scale and vernier read-out, ocular and cross wires (height 4.5 cm). In wooden case (width 10.2 cm, height 5.8 cm).
Signed "BECK LONDON" on the circle, first half 20th century.

private collection

Ocular goniometer, Beck, London

Ocular goniometer, Beck, London