ELI5: Explain Like I'm 5

Capacitance meter

A capacitance meter is a device that helps measure the amount of electricity that can be stored in a piece of material. It does this by sending a small electrical current through the material, then measuring how much electricity is stored in the material. The more electricity that can be stored, the higher the capacitance. This information can be useful for deciding what kind of material is best for certain uses.