Leon Saryan writes:
Here's a question for the experts: Is there an accepted way to measure and report the diameter of an irregular (i.e. not exactly circular ancient or medieval era) coin? If the coin is irregular the diameter will vary depending on the way it is placed within the caliper. Let's say for example the maximum diameter of a coin is 22 mm, and the minimum is 20 mm, can the diameter be reported as 21 mm? Should one rather say it is 20-22 mm, or 21 +/- 1 mm, or what?
Good question. Is there an accepted practice in this regard?
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