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Tire-Euro-OK
 

 

 

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Summary

Description
Español: Truco del euro. Si la banda de rodadura cubre, al menos, parte de la estrella más inferior de la moneda, tiene un desgaste admisible.
Date 25 September 2008(2008-09-25)
Source Own work
Author Schumi4ever
Other versions

Tire-Euro-Bad.JPG

U.S. quarter

This image has currency in it to indicate scale.

Avoid using objects such as coins for scale, as they 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 are particularly bad as they can reinforce a geographical bias, and some coins' designs are copyrighted.

Ideally, a photograph should include a ruler with the subject (as seen in this photo) or add a scale marking via an image editor instead (as seen in this photo). SI ("metric") units are the most commonly used worldwide (see metre, 1 E-2 m).

Examples of bad practice: here.

A tape measure


Common coin diameters for reference:

  • U.S. dollar:
    • 1¢: 19.05 mm , 0.75 in
    • 5¢: 21.21 mm , 0.79 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

Licensing

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GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.

w:en:Creative Commons
attribution share alike
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Image input equipment manufacturer Hewlett-Packard
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Date and time original image was generated 2008:09:25 17:44:10
Date and time image was made digital data 2008:09:25 17:44:10
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