A 19th-Century brass surveying compass, signed on the silvered dial W. & L.E. Gurley, Troy, N.Y., the edge-bar needle with jewelled cap and clamp, circle divided in 4 quadrants, the shaped limb with variation vernier adjustment by tangent screw, level, cross-bubble and 2 (of 4) sights, in mahogany case - 16½in. (41.9cm.) wide.