Usage patterns
計器を読むto read a gauge
The pilot read the altitude gauge to stabilize the aircraft.
計器が〈数〉を示すthe gauge shows/indicates a value
The gauge showed a speed of 120 kilometers per hour.
計器を確認するto check the gauge/instrument readings
The engineer checks all the instruments before departure.
計器が故障するfor a gauge/instrument to malfunction
The fuel gauge malfunctioned during the flight.