It makes the data thet they collect more reliable so if they need the data again, they have already tested it a few times so therefor they know that it is right.
A<span> barometer is used to measure air pressure. </span>
Hey /人 ◕ ‿‿ ◕ 人\
The answer is transmission
uses a series of gears to transmit power to facilitate changes in speed .
GLAD TO HELP
~~~ ╔͎═͓═͙╗
~~~ ╚̨̈́═̈́﴾ ̥̂˖̫˖̥ ̂ )