Was wondering if my scale is accurate, so did some web searches on the weights of US coins.
It turns out that one nickel is 5 grams, and a penny is 2.5 grams. The pennies need to be minted 1982 or later. The older ones are heavier.
Nickel (United States coin) - Wikipedia, the free encyclopedia
Penny (United States coin) - Wikipedia, the free encyclopedia
Mtbr's 2016 Winter Biking GearReviews and Roundups
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