Image:Thujopsis dolabrata2.jpg

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Photo of the foliage and cones of a hiba (Thujopsis dolabrata), compared with a one Euro coin for scale. Photo by MPF.

This image has a coin in it to indicate scale.

Do not use object 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.

Please photograph an object such as a ruler or add a scale marking in via an image editor instead. SI/metric units are the most commonly used worldwide (see metre, 1 E-2 m).

Examples of good practice: with (metric & imperial) ruler and with superimposed line.
Examples of bad practice: here.

Common coin diameters for reference:

U.S. and Canada:
- 1¢: 19 mm, 0.75 in;
- 5¢: 20 mm, 0.79 in;
- 10¢: 18 mm, 0.71 in;
- 25¢: 24 mm, 0.95 in;
- 50¢: 30 mm, 1.18 in;
- $1: 26 mm, 1.02 in;
- $2: 28 mm, 1.10 in.

UK
- 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.

Eur
- 1¢: 16.25 mm,
- 2¢: 18.75 mm,
- 5¢: 21.25 mm,
- 10¢: 19.75 mm,
- 20¢: 22.25 mm,
- 50¢: 24.25 mm,
- 1€: 23.25 mm,
- 2€: 25.75 mm,

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Subject to disclaimers.

Photo of the the foliage and cones of a hiba (Thujopsis dolabrata), compared with a one Euro coin for scale. Photo by MPF.