Sundial and compass with perpetual calendar and lunar circles. Brass
1677
Universal pocket sundial
1701-1721
Sundial with compass
1671-1700
Universal sundial in bronze with compass
1701-1800
Mechanical equinoctial sundial
1791-1800
Chinese bronze equatorial sundial
Sun-dial, brass, with crescent-shaped hour circle
1701-1800
Portable Universal compass sundial
1751-1800
Universal sundial, engraved by maker, with case
1764
Wheatstone's Helio-chronometer, 1876-1899
1876-1899