The barometer is the instrument that is used to measure the air pressure.
This instrument is an adequate type of balance.
A thermometer or pyrometer.
tympanometer
One instrument used to measure roughness of roads is the response type road roughness meters (RTRRMs)
The instrument used to measure humidity is called a hygrometer.
The instrument used to measure humidity is called a hygrometer.
Breath is measured by the amount of air volume and the time would be the rate. It would be measured by Cubic liters/ Cubic Centimeters over time
The instrument which is used to measure snowfall is called a snow gauge.
No. The instrument used to measure wind speed is an anemometer.
There is no single instrument for either of these things
A thermometer
What instrument do we use to measure the electrical and mechanical vibrations
This instrument is a balance.
The instrument you are looking for is a compass
The barometer is the instrument that is used to measure the air pressure.
Another metrologically certified standard instrument.