File:Peridotitic mantle xenolith.JPG

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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 (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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Summary

[edit]
Description
English: Picture of a piece of peridotitic (green) mantle xenolith within a (dark) volcanic bomb from the Vulkan-Eifel, Germany. Coin of one euro for scale.
Deutsch: Bild eines peridotitischen (grünen) Mantelxenoliths in einer (dunklen) vulkanischen Bombe aus der Vulkaneifel. Ein-Euro-Münze als Maßstab.
Nederlands: Afbeelding van een stuk peridotitische (groene) mantel xenoliet in een (donkere) vulkanische bom uit de Vulkaan-Eifel. Munt van één euro voor schaal.
Source I made this picture. (originally uploaded as Image:100 5725.JPG)
Author Woudloper 10:57, 31 January 2007 (UTC)
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  • share alike – If you alter, transform, or build upon this work, you must distribute the resulting work under the same license as the original.

Licensing

[edit]
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 1.0 Generic license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you alter, transform, or build upon this work, you must distribute the resulting work under the same license as the original.

File history

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Date/TimeThumbnailDimensionsUserComment
current11:52, 13 March 2007Thumbnail for version as of 11:52, 13 March 20072,560 × 1,920 (942 KB)Woudloper (talk | contribs){{Information |Description={{en|Picture of a piece of peridotitic (green) mantle xenolith within a (dark) volcanic bomb from the Vulkan-Eifel, Germany. Coin of one euro for scale.}} {{nl|Zelf gemaakte foto van een nl:vulkanische bom uit de [[:nl:Eife

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