Using coins for scale is discouraged as it will require people unfamiliar with them to look up the dimensions or guess, both of which defeat the purpose of the object in the first place. Coins can also reinforce a geographical bias, and some coins' designs are copyrighted.
Ideally, a photograph should include a ruler with the subject (example) or an added scale marking.
SI ("metric") units are the most commonly used worldwide (see meter and centimeter).
This work has been released into the public domain by its author, Wilson44691 at ingilis Vikipediya. This applies worldwide. In some countries this may not be legally possible; if so: Wilson44691 grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.Public domainPublic domainfalsefalse
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2007-11-01 11:10 Wilson44691 2272×1704×8 (953600 bytes) Photograph taken by Mark A. Wilson (Department of Geology, The College of Wooster). [http://www3.wooster.edu/geology/MWilson.html]
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{{BotMoveToCommons|en.wikipedia}} {{Information |Description={{en|Photograph taken by Mark A. Wilson (Department of Geology, The College of Wooster). [http://www.wooster.edu/geology/MWilson.html]}} |Source=Transferred from [http://en.wikipedia.org en.wik
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