What instrument measures emotions?

Answer 1

The frequency of sound is measured by a frequency meter. The volume is measured using a decibel meter

Sound Level Meter

The sound level meter is the basic measuring instrument for noise exposures. It consists of a microphone, a frequency selective amplifier, and an indicator. At a minimum, it measures sound level in dB SPL. An integrating function may be included to automate the calculation of the TWA or the noise dose.
Sound is measured with a sound-level meter or a VU meter. A sound-level meter measures the loudness of sound in decibels (dB) units, and a VU meter measures it in volume units (VU).
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One of the most common instruments used to measure sound is the decibel meter.

Answer 2

The instuments that measure pressure are hydrostatic and aneroid. A barometer, manometer, and tire gauge all measure pressure. Bordon gauges are industrial instruments that measure pressure.
Guage, Barometer
manometer

Commonly called a tire pressure gauge.
A measurement of pressure is PSI (pounds per square inch). There are gages that measure PSI.

The answer depends on what you are asking about:

For measuring blood pressure you could use a manometer.

For measuring tire pressure you could use a tire pressure guage.

For measuring air pressure you could use a barometer.

For measuring electrical pressure (also known as potential difference) you could use a voltmeter.

Note

There are lots of other things which may need to have their pressure measured, so when you ask a question about pressure, please say exactly which pressure you mean.
Scroll down to related links and look at "Pressure measurement - Wikipedia".

Answer 3

Finger dynamometer, pain intensity number scale, visual analog scale.

It maybe the algometer.
PALPOMETER is the correct and exact answer

Answer 4

Pain-O-Meter

Google before you start asking...

Answer 5

An accelerometer measures vibration.
Acclerometer and vibrometer are the instrument used to measure the vibration of the any object.
Accelerometers

Answer 6

Richter scale