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Horary quadrant
This is a horary quadrant but unusually carries no conventional hour lines by which to tell the time. Instead, the front is marked with an astrolabe quadrant. A surveyors shadow square appears as a curved scale along the limb. Unusually for a horary quadrant, the equation of time is set along the two sides of the instrument. It is signed 'Gab: Stokes Dublin fecit 1738'.
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Object Details
| ID: | NAV1055 |
|---|---|
| Collection: | Astronomical and navigational instruments |
| Type: | Horary quadrant |
| Display location: | Not on display |
| Creator: | Stokes, Gabriel |
| Date made: | 1738 |
| Credit: | National Maritime Museum, Greenwich, London, Caird Collection |
| Measurements: | Overall: 2 x 424 x 301 mm |
| Parts: | Horary quadrant |
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