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Sundial - Magnetic Azimuth, Jacques Senecal, Dieppe, France, circa 1660 Reg. No: ST 025187
- Portable sundial made by Jacques Senecal, Dieppe, France, circa 1660.
- The upper lid contains a horizontal sundial for latitude 50 degrees north (the latitude of northern France). When the lid is opened a pivoted metal arm enables the user to set the lid at any altitude, by the scale inside the lid, thereby creating an equatorial sundial.
The underside of the lid contains a rotating disc, which provides the approximate time of the Moon's transit in accordance with its age.
The inside box gives a list of French towns and their latitudes, the cardinal directions, and a compass marked with hours as an analemmatic dial.
- Acquisition Information:
- Donation from Mrs W. Blackall, 1960
|Dimensions:||1.5 cm (Height), 7 cm (Width), 8.5 cm (Length)|
|Themes this item is part of:||Horology Collection, Science & Measurement Collection|
|Maker:||Jacques Senecal, Dieppe, France, circa 1660|