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Summary
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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
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- 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
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- 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
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- 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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Licensing
Public domainPublic domainfalsefalse
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https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
Original upload log
The original description page was
here. All following user names refer to en.wikipedia.
- 2006-10-24 02:23 Easchiff 600×451×8 (51819 bytes) Image of trona, a naturally occurring mineral that is primarily hydrated sodium bicarbonate carbonate (Na<sub>3</sub>H(CO<sub>3</sub>)<sub>2</sub>·2H<sub>2</sub>O). Image from: http://resourcescommittee.house.gov/subcommittees/emr/usgsweb/materials/sodaa
- 2006-10-24 02:05 Easchiff 360×271×8 (21427 bytes) Image on trona, a naturally occurring mineral that is primarily hydrated sodium bicarbonate carbonate (Na3HCO3CO3·2H2O). Image from: http://resourcescommittee.house.gov/subcommittees/emr/usgsweb/materials/sodaash.html Photographer unknown.
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment |
current | 16:50, 4 March 2008 | | 600 × 451 (51 KB) | commons>Rhanyeia | {{Information |Description={{en|Image on trona, a naturally occurring mineral that is primarily hydrated sodium bicarbonate carbonate (Na<sub>3</sub>HCO<sub>3</sub>CO<sub>3</sub>·2H<sub>2</sub>O). Image from: http://resourcescommittee.house.gov/subcommit |
File usage
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