It depends on what you want to measure. Their mass or size?
The appropriate scale for the measurement of the weight of an earring would the milligram. this is because the weight of an earring is so small that it would be difficult to determine it s weight while reading on a bigger scale like the kilogram.
Seconds
Cm
Pint.
Either inches or millimetres Or centimetres.
Inches.
pounds
Probably Centimeters
Miles.Miles.Miles.Miles.
In most countries, it is customary to measure that in liters.
It is customary to use the kilogram - though that is technically not a weight, but a mass.
no