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Roof artificial horizon
A rectangular black-lacquered iron trough and an iron-framed roof-shaped cover. Two sides of the cover have clear glass panels, at an angle of 90 degrees. Accompanying the instrument is a full, circular metal jar with a threaded stopper for storing the mercury when the instrument is not in use.
The artificial horizon is contained in a fitted wooden carrying box, stamped on the inside ‘6343’. Inside the lid in pencil is the inscription ‘Ponsonby D. N° 9 G. Murry E.T. Adams 1905’.
The artificial horizon is contained in a fitted wooden carrying box, stamped on the inside ‘6343’. Inside the lid in pencil is the inscription ‘Ponsonby D. N° 9 G. Murry E.T. Adams 1905’.
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Object Details
| ID: | NAV0007 |
|---|---|
| Collection: | Astronomical and navigational instruments |
| Type: | Artificial Mercurial Horizon |
| Display location: | Not on display |
| Creator: | Unknown |
| Date made: | circa 1850 |
| People: | Honourable East India Company; Honourable East India Company |
| Credit: | National Maritime Museum, Greenwich, London, Adams Collection |
| Measurements: | Weight: 2.85 kg |
| Parts: | Roof artificial horizon |