A brass predictor type G.T.2. sight, outer scale divided 0-6300, inner azimuth scale divided 0-350, detachable sighting arm and other accessories in mahogany storage box -- 19in (48cm)

细节
A brass predictor type G.T.2. sight, outer scale divided 0-6300, inner azimuth scale divided 0-350, detachable sighting arm and other accessories in mahogany storage box -- 19in (48cm)