


Universal Ring Dial, 2 3/4" diam., Johann Somer
1651-1700

Universal ring sundial

Brass equinoctial ring dial
1660

Universal ring sundial, with mahogany case
1751-1800

3 1/2" Universal Ring Dial
1701-1800

Universal equinoctial ring sundial
1751-1800

Universal equinoctial ring sundial, astronomical four ring dial

Universal equinoctial ring sundial, astronomical ring dial
1628-1724

Universal equinoctial ring sundial
1651-1750

Universal ringdial brass (part silvered)
1701-1800

Astronomical circles with compass
1720

Universal equinoctial ring sundial signed "Cary London"
1789-1891

Universal Ring Dial, 4 1/2" diam.

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

Pocket universal Ring Dial

6" Universal Ring Dial
1656-1680

Universal equinoctial ring dial in silver
1801-1900

Universal equinoctial ring sundial
1651-1750

Equinoctial ring sundial
1719-1791

Universal equinoctial ring sundial signed (in Cyrillic) "A.S. Trindin
1701-1800
Universal Ring Dial
1701-1800
Universal Ring Dial
Portable Universal Ring sundial
1789-1891
Universal ring dial, by Smith, 6" brass
Astronomical Ring
1561