Image:SaltCrystaUSGOV.jpg

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US 50¢ coin

€1 coin		 This image has currency in it to indicate scale. Please add the size of the coin to this template: For example, {{NoCoins | {{convert|19|mm|in}} }} for a US or Canadian one-cent coin.

Using objects such as coins for scale is discouraged, 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 not free content.

If possible, upload a photograph of the subject using ruler for scale (example) or add a scale marking via an image editor instead (example). SI/metric units are the most commonly used worldwide (see metre, 1 E-2 m).

Common coin diameters for reference:
  • U.S. dollar:
    • 1¢: 19 mm, 0.75 in;
    • 5¢: 21 mm, 0.84 in;
    • 10¢: 18 mm, 0.71 in;
    • 25¢: 24 mm, 0.96 in;
    • 50¢: 31 mm, 1.21 in;
    • $1: 26.5 mm, 1.04 in.
  • Canadian dollar:
    • 1¢: 19 mm, 0.75 in;
    • 5¢: 21 mm, 0.83 in;
    • 10¢: 18 mm, 0.71 in;
    • 25¢: 24 mm, 0.94 in;
    • 50¢: 27 mm, 1.07 in;
    • $1: 26.5 mm, 1.04 in;
    • $2: 28 mm, 1.10 in.
  • Pound sterling:
    • 1p: 20.32 mm, 0.80 in;
    • 2p: 25.91 mm, 1.02 in;
    • 5p: 18.00 mm, 0.71 in;
    • 10p: 24.50 mm, 0.96 in;
    • 20p: 21.40 mm, 0.84 in;
    • 50p: 27.30 mm, 1.07 in;
    • £1: 22.50 mm, 0.89 in;
    • £2: 28.40 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.

Salt crystal

Source: http://resourcescommittee.house.gov/subcommittees/emr/usgsweb/photogallery/ ; English Wikipedia, original upload 3 August 2004 by Chris 73

Public domain This image is a work of the "Minerals in Your World" project, a cooperative effort between the United States Geological Survey and the Mineral Information Institute. The images were featured in the "Minerals and Materials Photo Gallery" on the website of the U.S House Subcommittee on Energy and Natural Resources. As a work of the U.S. federal government, the image is in the public domain.

File history

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Date/TimeDimensionsUserComment
current04:44, 2 October 2005600×450 (37 KB)Saperaud (Salt crystal Source: http://resourcescommittee.house.gov/subcommittees/emr/usgsweb/photogallery/ ; English Wikipedia, original upload 3 August 2004 by Chris 73 {{PD-USGov-Interior-USGS-Minerals}} Category:Halite [[en:Imag)
The following pages on the English Wikipedia link to this file (pages on other projects are not listed):