File:Zarbula-auxiliary-equatorial-centre.png
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Summary
| Description |
English: Giovanni Francesco Zarbula was a cadranist active in Hautes Alpes in the 1830-1860s. His dialling technique was simple but effective and did not require magnetic compasses or protractors as all was done by geometric construction. |
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| Source | Own work | |
| Author | Photograph by Clem Rutter, Rochester, Kent. (www.clemrutter.net). | |
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 18:52, 14 May 2015 | | 719 × 660 (98 KB) | ClemRutter |
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