A late 19th/early 20th-Century electrum protractor with radius arm
A late 19th/early 20th-Century electrum protractor with radius arm, graduated 1-360° in both directions, the radius arm with a vernier scale graduated 30°-0-30°, in a plush-lined leatherette case -- 38.2cm (15in.) wide ; a 20th-Century lacquered-brass station pointer, signed HEATH & C O LONDON. S.E.9. N O 4352 , the protractor with silvered scale graduated 1-360°, two arms with fine screw adjustment and clamp to the silvered verniers graduated 0-30°, and a third arm, in a fitted mahogany case with arm extensions -- 49.5cm. (19½in.) wide ; an incomplete 19th-Century cased drawing set, the divider signed Savart FECIT -- 20cm. (7 7/8in.) wide ; and two 19th-Century lacquered-brass French crosses, both unsigned , with threaded staff-mounting, one drum-shaped with silvered scale and vernier, adjustment wheel and three pairs of sights -- 14cm. (5½in.) high ; the other of octagonal form with two sights on each face -- 14.7cm. (5.34in.) high (5)
A late 19th/early 20th-Century electrum protractor with radius arm
A late 19th/early 20th-Century electrum protractor with radius arm, graduated 1-360° in both directions, the radius arm with a vernier scale graduated 30°-0-30°, in a plush-lined leatherette case -- 38.2cm (15in.) wide ; a 20th-Century lacquered-brass station pointer, signed HEATH & C O LONDON. S.E.9. N O 4352 , the protractor with silvered scale graduated 1-360°, two arms with fine screw adjustment and clamp to the silvered verniers graduated 0-30°, and a third arm, in a fitted mahogany case with arm extensions -- 49.5cm. (19½in.) wide ; an incomplete 19th-Century cased drawing set, the divider signed Savart FECIT -- 20cm. (7 7/8in.) wide ; and two 19th-Century lacquered-brass French crosses, both unsigned , with threaded staff-mounting, one drum-shaped with silvered scale and vernier, adjustment wheel and three pairs of sights -- 14cm. (5½in.) high ; the other of octagonal form with two sights on each face -- 14.7cm. (5.34in.) high (5)
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
