: : 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
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example) or an added scale marking.
SI ("metric") units are the most commonly used worldwide (see
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centimeter).
Images with coins to indicate scale Common coin diameters for reference: U.S. dollar (as of?): 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 (as of?): 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 as of 2021: 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: 23.03–23.43 mm, 0.91–0.92 in £2: 28.4 mm, 1.12 in : Euro as of 2002: 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.
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+/−. Description: English: Lycorma delicatula life stages with size comparison. Date: 6 October 2021. Source: This work is written by (a) US Government employee(s) and is in the public domain in the US. Author: Published by Oxford University Press on behalf of Entomological Society of America 2021.
