SURVEYING INSTRUMENTS, COMPASSES AND DIALS
A 19th-century silvered-brass equinoctial compass-sundial,
细节
A 19th-century silvered-brass equinoctial compass-sundial,
signed J. Long London, with engraved hour circle, lacquered-brass spring-loaded gnomon, printed paper compass card and blued needle the underside of the compass frame inscribed in ink Royal Military College, 1852, with two brass catches, in mahogany case 5 3/8in. (13.6cm.) square (lid missing)
See illustration
signed J. Long London, with engraved hour circle, lacquered-brass spring-loaded gnomon, printed paper compass card and blued needle the underside of the compass frame inscribed in ink Royal Military College, 1852, with two brass catches, in mahogany case 5 3/8in. (13.6cm.) square (lid missing)
See illustration