File:British Museum Marine Chronometer.jpg
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Summary
| Description |
English: Marine chronometer made by Thomas Earnshaw (Senior) that was used on the HMS Beagle. Français : Chronomètre de marine du HMS Beagle |
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| Date | 24 June 2010 | |||||||||||||||||||||||
| Collection |
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| Source/Photographer | BabelStone (Own work) | |||||||||||||||||||||||
Details
| British Museum reference | CAI.1957, L210 / Registration:1958,1006.1957 |
| Detailed description | Marine chronometer, Rectangular mahogany box, lined with green baize, with brass carrying handles at the sides. Hinged lid with glazed viewing aperture and sliding mahogany cover. A key-operated lock at the front. There is an inserted plain ivory disc in the lid front. Silvered brass dial with Roman hours I-XII within a minutes circle. Subsidiary seconds dial above VI. Plain blued-steel hour, minute and seconds hands. Movement contained in a lacquered brass bowl. One-day spring-driven movement, with fusee and Harrison's maintaining power. Jewelled bearings for train wheels in screwed settings. Earnshaw spring-detent escapement with Earnshaw split-bimetallic temperature compensation balance and free-sprung helical blued-steel balance spring. |
| Size | Height: 17.6 cm (6.9 in) Width: 20.8 cm (8.2 in) Depth: 20.8 cm (8.2 in) |
| Location | Room 39 case 10 |
derivative works
Derivative works of this file: British Museum Marine Chronometer cropped.jpg
Licensing
 
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This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
| The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 07:28, 27 June 2010 | | 1,512 × 2,496 (818 KB) | wikimediacommons>Fæ | Reduce slight milkiness from glass case reflections. Combination of gamma adjust, exposure reduction and histogram adjustment. |
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