How Thick is a Dime?

In order to determine exactly how thick a dime is, you will need to know when your dime was issued. The Roosevelt dime replaced the Liberty Head dime in 1946 and they were slightly different. The current dime, the Roosevelt is 1.35 mm thick. You can find more information here: http://www.enchantedlearning.com/math/money/coins/dime/
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