Image:Balance Wheel in Early Watch Berthoud.png
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[edit] Summary
| Description |
Illustration of a balance wheel in an early watch, by Ferdinand Berthoud. Alterations: Detail cropped from drawing showing entire watch disassembled. |
|---|---|
| Source |
Downloaded from Ferdinand Berthoud (1805), L'art de Conduire et de Regler les Pundules et les Montres, J.M. Eberhardt, Paris, Plate 2e on Google Books |
| Date |
Published 1805 |
| Author |
Ferdinand Berthoud |
| Permission (Reusing this image) |
Public domain: the author died in 1807. |
[edit] Licensing
 |
This image (or other media file) is in the public domain because its copyright has expired. This applies to the United States, Canada, the European Union and those countries with a copyright term of life of the author plus 70 years.
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 12:14, 6 July 2007 | 464×366 (37 KB) | Chetvorno | ({{Information |Description=Illustration of a balance wheel in an early watch, by a master watchmaker of the 19th century. From Ferdinand Berthoud (1811), ''L'art de Conduire et de Regler les Pundules et les Montres'' |Source=http://books.google.com/book) |
