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).
da delite – da umnožavate, raspodeljujete i prenosite delo
da prerađujete – da preradite delo
Pod sledećim uslovima:
autorstvo – Morate da date odgovarajuće zasluge, obezbedite vezu ka licenci i naznačite da li su izmene napravljene. Možete to uraditi na bilo koji razuman manir, ali ne na način koji predlaže da licencator odobrava vas ili vaše korišćenje.
deliti pod istim uslovima – Ako izmenite, preobrazite ili dogradite ovaj materijal, morate podeliti svoje doprinose pod istom ili kompatibilnom licencom kao original.