A rare lacquered brass railroad surveying compass, the silvered compass dial signed W. & L.E. Gurley Troy N.Y., and further engraved Ja W Queen & C Agents, Philad and New York, with finely engraved scales, the blued-iron edge-bar needle with jewelled pivot and clamp, the compass box mounted on the limb with enclosed horizontal circle and internal rack and pinion adjustment, 2 vernier windows, the limb with level and cross-bubble, twin sights, and staff mounting, makers trade label, in fitted mahogany case - 16½in. (42cm.) wide.