A COMPARATIVE GALLERY OF OCTAHEDRAL WORLD MAPS
Compiled by Gene Keyes
Type
Aspect
Meridian
Geocells
Original size
Conformal, Equal-area, Gnomonic
2 1/2 x 5°
http://www.genekeyes.com/CAHILL_GALLERY/1934-Cahill-3-in-1.html
| B.J.S CAHILL'S BUTTERFLY MAP AND
BEYOND: A COMPARATIVE GALLERY OF OCTAHEDRAL WORLD MAPS Compiled by Gene Keyes |
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| Date |
Author |
This scale |
<— Source |
<— % change |
| [1934], 1938 |
B.J.S. Cahill |
1/200 M |
1/317 M |
158% |
Type |
Aspect |
Defining Meridian |
Geocells |
Original size |
| 3-in-1: Conformal, Equal-area, Gnomonic |
N. Atlantic |
22 1/2° |
5° & 2 1/2 x 5° |
70 x 124 mm |
| Remarks: |
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| One of the few published Cahill maps with a full 5° graticule. |
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| Source (print) |
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| B.J.S. Cahill, "Projection"(Nelson's Encyclopedia, [1934],
offprint); also in Cahill, "The Butterfly Map: Octahedral System of Projection"
(Pacific Marine Review, 1938-09) p. 42-43 |
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| Source (online: page title & link) |
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| This page http://www.genekeyes.com/CAHILL_GALLERY/1934-Cahill-3-in-1.html |
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| Source (online: item link) |
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http://www.genekeyes.com/CAHILL_GALLERY/1934-Cahill-3-in-1.jpg |
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