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Equinoctial ring sundial

1719-1791

Brass equinoctial ring dial

1660

Universal Ring Dial, 2 3/4" diam., Johann Somer

1651-1700

3 1/2" Universal Ring Dial

1701-1800

Universal ring dial in small wooden case

Universal equinoctial ring sundial, astronomical four ring dial

Universal equinoctial ring sundial

1751-1800

Universal equinoctial ring sundial, astronomical ring dial

1628-1724

Universal equinoctial ring sundial

1651-1750

Universal ring sundial, with mahogany case

1751-1800

Universal ring sundial

6" Universal Ring Dial

1656-1680

Universal Ring Dial, with three rings, 6" diam.

Pocket universal Ring Dial

Universal equinoctial ring dial in silver

1801-1900

Astronomical circles with compass

1720

Universal Ring Dial, 4 1/2" diam.

Universal ringdial brass (part silvered)

1701-1800

Universal equinoctial ring sundial

1651-1750

Universal equinoctial ring sundial signed (in Cyrillic) "A.S. Trindin

1701-1800

Universal equinoctial ring sundial signed "Cary London"

1789-1891
Universal ring dial, by Smith, 6" brass

Universal ring dial, by Smith, 6" brass

Universal Ring Dial, 4" diam., with plate to secure greater accuracy, unsigned, England

Universal Ring Dial

Universal ring dial, brass, 3 5/8-inch outside diameter, Europe, 1701-1800.

Universal Ring Dial

1701-1800
Astronomical Ring, brass, nearly 5-inches diameter; inscribed: "Nepos Gemae F. Louany fecit 1561" (indicating that it was made by one of the Arsenius brothers) with modern suspension ring

Astronomical Ring

1561
Portable Universal Ring sundial, by William Cary, London, with wood and cord suspension, in fitted wooden case

Portable Universal Ring sundial

1789-1891