细节
J.H. STEWARD LTD., London
An oxidised and lacquered-brass goniometer, the vertical circle with silvered-scale divided 0-350, vernier and specimen holder, on shaped black-enamelled base with levelling-screw -- 7in.(18cm.)high, in wood case
An oxidised and lacquered-brass goniometer, the vertical circle with silvered-scale divided 0-350, vernier and specimen holder, on shaped black-enamelled base with levelling-screw -- 7in.(18cm.)high, in wood case