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Reply To: | Maps-L: Map Librarians, etc. |
Date: | Fri, 18 May 2018 18:55:26 +0000 |
Content-Type: | multipart/alternative |
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Hi all,
I have a calculating scale question. This map I'm cataloging has a bar scale. I measured the bar, did the math, and got the ratio.
Just for the fun of it I also measured between 2 points on the map, as far apart as the map would allow, obviously much greater than the bar scale, then measured between the same 2 points on google maps, and again did the math. The difference was about 10%. Which calculation would you trust? Granted, either entries in the 255 would be an approximation. A potential issue could be divergent projections etc. Any suggestions?
Rick Grapes
BYU Map Cataloger
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