"Life Hack" How to measure with [British] coins

carabonnair

This showed up in an article about cigarette cards:

CIVITAS

Clever.

carabonnair

That means the circumference of a half penny is π inches.

syl

Canada did the same thing with their 1858-59 large cents ... exactly 1"(same as Brit halfpenny) and a weight of 4.54g, so 100 equaled a pound. Unfortunately, the Canadian people didn't like the "thinner" penny (thinner than a Brit halfpenny), so the next year striking them (1876) the Canadian large cent was then made the same size as the Brit halfpenny, but of bronze, not copper.