英和和英

string-instruments

a megaphone

a megaphone

a megaphone

linear amplifier

the conductor of a band

a measuring instrument called caliper

streaming audio

noise of an alarm clock

the dial of an instrument

headphone

hourly chimes

an instrument used by surveyors for measuring angles, called

an audio tape

muted trumpets

muted trumpets

a drum

measuring instrument

a pointing device on a machine

any acoustic unit of measurement

a rule equipped with simple or telescopic sights and used for determination of direction, called alidade

an instrument named {Michelson interferometer}

a surveying-ship

triangulation

land surveying

an instrument used as a gauge

a measuring device called carpenter's square

an instrument for mechanically measuring the depth of water beneath a ship, called depth-sounder

measuring instrument for recording the number of steps taken in walking

a linear measurement