The commonest convenient unit is the millimetre (mm), and they are around 1.2 mm thick.
That would be measured in millimetres.
Milimeter
Millimeters.
Millimeters.
A micrometre.
Milimeter
That would be measured in millimetres.
Millimeters.
Millimeters.
Millimeters.
cenemeters
A micrometre.
What measure of units would you use to measure the thickness of a phone book
one page of a phonebook is measured in mm. unit thickness of a phone book is cm
Typically you might use "mm" for coins. For currency, I would suggest micron units.The millimeter.
Meters. It's the same unit you would use for length, or distance.
The answer depends on whether you wish to measure its mass, its length, its thickness or another attribute.