measuring instrument; measuring device; gauge
General term for instruments used to measure physical quantities such as length, weight, temperature, or electrical values.
I measure the temperature with this measuring instrument.
工場ではさまざまな測定器が使われている。
Various measuring instruments are used in the factory.
direction finder
radiation meter; radiation detector; particle detector
blood glucose meter; glucometer
Compound of 測定 (measurement) + 器 (instrument, device).