Details
A late 19th-Century heliochronometer,
of Pilkington and Gibbs pattern, unsigned, with rotating calendar volvelle, the hour-ring engraved in Roman numerals, with minute division vernier, with two fixed sights, on turned plinth base -- 10in. (26cm.) high
See Illustration
of Pilkington and Gibbs pattern, unsigned, with rotating calendar volvelle, the hour-ring engraved in Roman numerals, with minute division vernier, with two fixed sights, on turned plinth base -- 10in. (26cm.) high
See Illustration