File:EB1911 - Micrometer - Fig 16.png
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Summary
| Description |
English: Greenwich Astrographic Catalogue, vol. i., by permission of the Controller of H.M. Stationery office.
Fig. 16.—Diagram of the diaphragm in eyepieces of the micrometer used for measuring the plates of the Astrographic Catalogue. |
| Date | |
| Source | https://en.wikisource.org/wiki/Page%3AEB1911_-_Volume_18.djvu/408 |
| Author | Encyclopædia Britannica |
Licensing
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This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States. |  |
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| current | 19:25, 16 March 2023 | | 1,295 × 1,289 (136 KB) | Sp1nd01 | Uploaded a work by Encyclopædia Britannica from https://en.wikisource.org/wiki/Page%3AEB1911_-_Volume_18.djvu/408 with UploadWizard |
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