The doctor is an "ENT" (ear, nose, and throat doc) or an "Otolaryngologist".
His technician/grunt/slave who runs the hearing test is an Audiologist.
Multiply km by 1,000:
0.52 kilometers is 520 meters.
An Audiometer measures hearing.
tympanometer
audiological evaluation
Otometry
audiometer
The instrument which is used to measure snowfall is called a snow gauge.
Mass is measured against a standard by using an instrument called a balance.
You should use a tape measure, ruler, or meter stick. The measurements should be in inches, feet, or centimeters.
an oscilloscope
the answer is a ruler because it is and instrument used to measure someone in govern
A sonometer is an audiometer. A measuring instrument used to measure the sensitivity of hearing.
The instrument which is used to measure snowfall is called a snow gauge.
The instrument used to measure the total distance that a car has traveled is called an odometer.
It is called a water meter
This instrument is called pH-meter.
Using an instrument called an anemometer.
A thermometer
psychrometer
The instrument that can measure squinting is called a strabismometer. The instrument is curved to fit in the lower eyelid.
The instrument used to measure a angle is called a protractor!
Such an instrument could be called the Laser Scan Micrometer.
The instrument is called an anemometer