Translation guide
A wattmeter is an instrument for measuring electric power in watts. In Japanese, the standard term is 電力計 (でんりょくけい), but ワットメーター is also understood, especially in technical contexts.
The learner wants to refer to a device that measures electrical power in watts.
Standard Japanese term for a wattmeter. Used in technical and engineering contexts.
この電力計で消費電力を測定してください。
Please measure the power consumption with this wattmeter.
Loanword from English, commonly used in technical settings and understood by engineers.
ワットメーターを使って電力を測ります。
I measure the power using a wattmeter.
A more descriptive term meaning 'power measuring instrument'. Less common than 電力計.
この電力測定器は高精度です。
This power measuring instrument is highly accurate.