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Horary quadrant with Gunter projection
This is a horary quadrant marked with Gunter scales and a surveyor's shadow square in the top third. The brass sights on the left edge are intact but the plumb and bob are missing. As is common with boxwood quadrants, the reverse has no nocturnal dial and has therefore not been photographed.
Fitted with sights brass and plumb bob.
5 stars marked and named:
Wing of Pegasus, Arcturus, Lions Heart, Bull's eye, Vulture's heart.
Table of R.As of these stars.
Geometrical square in apex.
Latitud 51 30'.
Fitted with sights brass and plumb bob.
5 stars marked and named:
Wing of Pegasus, Arcturus, Lions Heart, Bull's eye, Vulture's heart.
Table of R.As of these stars.
Geometrical square in apex.
Latitud 51 30'.
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Object Details
| ID: | NAV1037 |
|---|---|
| Collection: | Astronomical and navigational instruments |
| Type: | Horary quadrant with Gunter projection |
| Display location: | Not on display |
| Creator: | Unknown |
| Date made: | circa 1675 |
| Credit: | National Maritime Museum, Greenwich, London, Caird Collection |
| Measurements: | Overall: 12 x 124 x 140 mm |
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