noun
measuring device; measurement apparatus
General term for any instrument or equipment used for measurement, from simple gauges to complex laboratory systems.
この測定装置は温度と湿度を同時に記録できます。
This measuring device can record temperature and humidity simultaneously.
計測器 is a more technical term often used for precision measuring instruments, while 測定装置 is a broader term for any measuring apparatus.
Compound of 測定 (measurement) and 装置 (device, apparatus).