Astronomical compendium lunar volvelle
Lunar volvelle for the astronomical compendium for latitude 48° North. Beneath this, a lunar volvelle, consisting of two brass discs, is set into the remaining body of the instrument. The outer disc has a lunar-age scale and an hour scale. The rotatable brass disc has a pointer, an hour scale and a circular aperture revealing a pictorial display of the phases of the moon.
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Object Details
ID: | AST0415.4 |
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Type: | Astronomical compendium lunar volvelle |
Display location: | Not on display |
Creator: | Unknown |
Date made: | 17th century |
Credit: | National Maritime Museum, Greenwich, London, Caird Collection |
Measurements: | Overall: 48 mm; Diameter: 44 mm |
Parts: | Astronomical compendium |