Millimeters.
milliliters
Yes
The mass of any coin is typically measured in grams; the capacity or volume would be measured in millilitres.
A United States dime coin is 1.35 mm thick. See related link.
Gram
The thickness of part of a Nerf Dart
Millimetres, as in 1.5 mm. You could use a micrometer to measure thickness of a coin.
Coins are measured in millimetres.
Micrometer.
Yes
With a micrometer (caliper) To measure the thinkness you use mm's
If the density AND the diameter are the same, then the coin with double thickness has double the mass.
The mass of any coin is typically measured in grams; the capacity or volume would be measured in millilitres.
A United States dime coin is 1.35 mm thick. See related link.
The thickness is 1.55mm which is measured at the rim of the coin.
The thickness of a two dollar coin is 2.70mm thick.
You could describe that measurement accurately and precisely with any unit of length.But the 'millimeter' would probably produce the most convenient number.
The US 10¢ coin (dime) is 1.35 millimeters thick.