细节
A late 19th-Century 1-inch single draw monocular,
signed on the gilt-brass draw tube CALLAGHAN LONDON with ebonised outer body tube; a chatelaine monocular; a single-draw telescope in case; a Crookes spinthariscope by Armbrecht Nelson & Co. in case; and a Sheffield-plate three-draw monocular with ivory mounts.
See Illustration (5)
signed on the gilt-brass draw tube CALLAGHAN LONDON with ebonised outer body tube; a chatelaine monocular; a single-draw telescope in case; a Crookes spinthariscope by Armbrecht Nelson & Co. in case; and a Sheffield-plate three-draw monocular with ivory mounts.
See Illustration (5)