This image has currency in it to indicate scale.
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.Images with coins to indicate scale
Common coin diameters for reference:
The template is used on files if they depict a coin or other object to give a hint of scale which is discouraged in preference of actual measure scales.
Note: Do not use this template for images where coins are solely used for color comparisons, such as metal luster comparisons, where the sizes of the compared items are irrelevant.
The template automatically sets the following categories: Category:Images with coins to indicate scale
The template takes no parameters.
The template is intended to be used in the following namespaces: the File namespace
The template is intended to be used by the following user groups: all users
To add your language to the list of languages supported by this template, please copy the code of Template:NoCoins/en (or any other language version you prefer to translate) and replace the text strings in there (the form below can be used to create a translation, the English version is preloaded in the edit box). Please change the parameter lang from en (or whatever language you are translating) to the language code of your language.