英和和英

a rectifier of prejudices

an instrument for checking short circuits, called a ground detector

a voltmeter

a sensitive voltmeter

a frequency discriminator

a galvanometer of extreme sensitivity

a kind of radar device called over-the-horizon radar

the arc voltage

a tachometer

measuring instrument that detects electric charge

a sopranino recorder

a short circuit detector called a {leakage detector}

a device called a frequency discriminator

a valve detector

a laser interferometer

a hodometer

a device used to detect the presence of electric waves

a survey to measure the height of tides

an anemometer

a wind-gauge

aneroid barometer

Power stoppage meter

a steam-gauge

a barometer

barometer

a recording barometer

a salinometer

a wattmeter

a deadbeat controller

a radar beacon