Ulmus uyematsui leaf with 1 Euro coin

Description:

Description: English: Photo of mature leaf of Ulmus uyematsui, with 1 Euro coin as scale. Date: 13 May 2011. Source: Own work. Author: Ptelea. Other versions: Derivative works of this file: Ulmus uyematsui leaf with 2 cm scale bar.jpg. : : 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. 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). Images with coins to indicate scale Common coin diameters for reference: U.S. dollar: 1¢: 19.05 mm , 0.75 in 5¢: 21.21 mm , 0.84 in 10¢: 17.91 mm , 0.71 in 25¢: 24.26 mm , 0.94 in 50¢: 30.61 mm , 1.22 in $1: 26.5 mm , 1.02 in : Canadian dollar: 1¢: 19.05 mm , 0.75 in 5¢: 21.2 mm , 0.83 in 10¢: 18.03 mm , 0.71 in 25¢: 23.88 mm , 0.94 in 50¢: 27.13 mm , 1.07 in $1: 26.5 mm , 1.02 in $2: 28 mm , 1.1 in : Pound sterling: 1p: 20.32 mm , 0.8 in 2p: 25.91 mm , 1.02 in 5p: 18 mm , 0.71 in 10p: 24.5 mm , 0.96 in 20p: 21.4 mm , 0.84 in 50p: 27.3 mm , 1.07 in £1: 22.5 mm , 0.89 in £2: 28.4 mm , 1.12 in : Euro: 1c: 16.25 mm , 0.64 in 2c: 18.75 mm , 0.74 in 5c: 21.25 mm , 0.84 in 10c: 19.75 mm , 0.78 in 20c: 22.25 mm , 0.88 in 50c: 24.25 mm , 0.95 in €1: 23.25 mm , 0.92 in €2: 25.75 mm , 1.01 in. Deutsch | English | Español | Suomi | Français | Gaeilge | עברית | Italiano | 日本語 | Македонски | മലയാളം | Plattdüütsch | Português | Русский | 中文 | 中文（简体）‎ | +/−.