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).
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Loyvi verður givi at avrita, bera út og/ella broyta hetta skjal undir treytunum hjá GNU Free Documentation License, versión 1.2 ella einhvør seinni versjón ið er útgivin av Free Software Foundation; uttan nakað óbroytiligt brot, uttan forsíðutekst og uttan baksíðutekst. Eitt avrit av loyvinum er tikið við í brotinum ið nevnist GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue
ognan – Tú mást ognarskrivað verkið á ein slíkan hátt sum er útgreinaður av høvundanum ella lisenseigaranum (men ikki á nakran hátt ið kundi bent á at hesin hevur góðkent teg ella tína nýtslu av verkinum).
deil undir somu treytum – Um tú broytir, evnar til ella byggir víðari á hetta verk, so kanst tú bert útgeva verkið undir somu ella líkandi lisensi sum hesin.
This licensing tag was added to this file as part of the GFDL licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue
Tú kanst velja tann lisens ið tú ynskir.
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