A new and correct sea chart of the whole world showing the variations of the compass as they were found in the year 1700 reproduced by photolithography 1870 September, with the permission of the principal librarian of the British Museum Vincent Brooks, Day and Son, photolith. London W.C..
Scale: circa 1:35,000,000. Facsimile. Reproduction of Halley's world map with isogonic lines, on one sheet. Mercator's projection. Scale: circa 1:35,000,000. Facsimile. Reproduction of Halley's world map with isogonic lines, on one sheet. Mercator's projection. George Biddell Airy, then Astronomer Royal, felt that it would be valuable to reproduce this chart, which was requently referred to in works on magnetism, but very difficult to find. A reduced version of this chart was included as an appendix to the Greenwich Observations for 1869.
Object Details
| ID: | G301:1/7(2) |
|---|---|
| Collection: | Charts and maps |
| Type: | Chart |
| Display location: | Not on display |
| Creator: | Vincent Brooks Day & Son Ltd |
| Date made: | 1700; 1870; 1700 1870 |
| Credit: | National Maritime Museum, Greenwich, London |
| Measurements: | Sheet: 128 cm x 61 cm |
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