Question

What is the appropiate customary unit to measure a paper clip

Answer 1

Centimeters or inches would be appropriate because the size of a paperclip is very tiny.

Answer 2

Since a paperclip is extremely light, the weight of a paperclip would be measured in ounces. When thinking about weight, remember that an ounce is about the weight of a pencil, a pound is about the weight of a bag of candy, and a ton is about the weight of a truck.