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View Full Version : How to measure the length of a coin


sugar4321
Jun 26, 2010, 09:48 PM
Coin size ( length )

morgaine300
Jun 27, 2010, 04:23 AM
A coin is round and doesn't have a length. I'm assuming you mean the diameter.

What do you mean by "how" do you measure it?

JK191
Jun 27, 2010, 11:12 AM
Simple, you measure its diameter then proceed to use the following:

2 * pi * r where r is half the diameter. This gives you the perimeter of the coin which I suppose is what you meant by length.

Unknown008
Jul 1, 2010, 03:01 AM
And if you want a precise measurement, you can make use of a pair of vernier callipers.