An instrument or device used to measure physical quantities (temperature, pressure, current, etc.).
ラボでは高精度の計測器を使ってデータを取得した。
In the lab we used high-precision measuring instruments to collect data.
温度計は最も基本的な計測器の一つだ。
A thermometer is one of the most basic measuring instruments.
計測器の校正は定期的に行う必要がある。
Calibration of measuring instruments needs to be performed regularly.