A 19th-Century lacquered brass surveying compass, signed on the silvered dial Spencer & Comp LONDON, the circle divided in 4 quadrants, the edge-bar needle with jewelled cap and balance weight for dip and screw clamp, with level and cross-bubble, the limb with 2 sights, on universal ball and socket staff mounting, in pine case - 15ins. (38cm.) wide; and a Troughton & Simms swinging arm protractor in case - 7 1/8ins. (18.1cm.) wide. (2)