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English horary quadrant, 1623-1700

English horary quadrant, 1623-1700

1623-1700
English horary quadrant, 1656

English horary quadrant, 1656

1656
English horary quadrant, 1650-1725

English horary quadrant, 1650-1725

1650-1725
English horary quadrant, 1718-1747

English horary quadrant, 1718-1747

1718-1747
European horary quadrant, 1650-1725

European horary quadrant, 1650-1725

1650-1725
English horary quadrant, 1650-1725

English horary quadrant, 1650-1725

1650-1725
English horary quadrant, 1650-1725

English horary quadrant, 1650-1725

1650-1725
French horary quadrant, 1600-1625

French horary quadrant, 1600-1625

1600-1625
European horary quadrant, 1650-1725

European horary quadrant, 1650-1725

1650-1725
European horary quadrant, 1650-1725

European horary quadrant, 1650-1725

1650-1725
horary quadrant, 1650-1725

horary quadrant, 1650-1725

1650-1725
English horary quadrant, 1750-1799

English horary quadrant, 1750-1799

English boxwood Gunter quadrant, by Bate (4 1/2-inch radius)

English horary quadrant, 1750-1799

1750-1799
Brass Gunter quadrant (9-inch radius) by John Worgan, London, 1685-1700, with lead plumb bob. Pivot hole in centre of plate indicates the quadrant was mounted in stand that is now missing (see 1920-439).

English horary quadrant, 1685-1700

1685-1700
Boxwood Gunter horary quadrant (5 1/2-inch radius), English, with wooden volvelle (planispheric nocturna) on reverse side.

English horary quadrant, 1675-1700

1675-1700
Boxwood Gunter quadrant with fitted mahogany case ( 3 1/2-inch radius).

European horary quadrant, 1650-1725

1650-1725
Brass Gunter quadrant by Roger Foster, 17th century, with degree scales and shadow square with later horizon glass, mirror and index arm and tin case

English horary quadrant, 1650-1725

1650-1725
Reconstruction of Gunter's quadrant, a 17th century instrument for observing altitudes.

Replica of horary quadrant, 1600-1699

Boxwood Gunter horary quadrant ( 3 1/2-inch radius).

European horary quadrant, 1650-1725

1650-1725
Brass horary Gunter quadrant by Roger Foster, 17th century, with degree scales and shadow square with later horizon glass, mirror and index arm.

Brass horary Gunter quadrant by Roger Foster

1650-1725