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).
Nik, lan honen egile eskubideen jabeak, lan hau domeinu publikoan jartzen dut. Mundu osoan du eragina honek. Estatu batzuetan beharbada hori ez da legez posible izango. Halakoetan: Edonori ematen diot lan hau edozertarako erabiltzeko eskubidea, inolako baldintzarik gabe, legeak nahitaez ezarritako baldintzak izan ezik.
Irudi-oineko testuak
Add a one-line explanation of what this file represents