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, Embowafa34. This applies worldwide.
In some countries this may not be legally possible; if so: Embowafa34 grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
Original upload log
The original description page was here. All following user names refer to en.wikipedia.
2008-01-31 17:24 Embowafa34 315×456×8 (46468 bytes) {{Information |Description= Copaxone Injection Site Reaction - Upper Left Arm |Source=self-made |Date= Jan, 2008 |Location= |Author=~~~ |Permission= |other_versions= }}
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copyright status
copyrighted, dedicated to the public domain by copyright holder
copyright license
released into the public domain by the copyright holder
inception
31 January 2008
exposure time
0.125 second
f-number
3.5
focal length
11.8 millimetre
ISO speed
160
MIME type
image/jpeg
instance of
photograph
checksum
b536adefdbbf82a41b89844a06c9dcc785a3c0ca
determination method: SHA-1
data size
46,468 byte
height
456 pixel
width
315 pixel
File history
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{{BotMoveToCommons|en.wikipedia}} {{Information |Description={{en|Copaxone Injection Site Reaction - Upper Left Arm}} |Source=Transferred from [http://en.wikipedia.org en.wikipedia]<br/> (Original text : ''self-made'') |Date=2008-01-31 (original upload d
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