observation equipment; measuring instruments
General term for devices used to observe, measure, or monitor natural phenomena, often in scientific or technical contexts.
Install meteorological observation equipment.
This observation equipment is extremely precise.
測定器 emphasizes measuring instruments, while 観測機器 covers a broader range of observation and monitoring devices.
観測装置 is a near-synonym, often used interchangeably, but 装置 can imply a larger or more complex apparatus.
Compound of 観測 (observation) + 機器 (equipment, instruments).