Question : WHAT is the equipment used
to measure the noise level in a vehicle's cabin ?
Can it be purchased locally and what is the price range ?
Answer : The equipment used is a sound meter and can be purchased from
most shops selling scientific equipment.
Having got the equipment, you must know how to use it and the different
standards and methods used for the measurement of sound, both inside and outside
Unless you are going to be doing comparison tests, I do not see what you can
really do with the equipment.
Prices can range from a few hundred dollars to a few thousand, depending on
the accuracy needed and the accessories wanted.