To monitor a one's ability to breathe out air.
There are many places to purchase peak flow meters. Peak flow meters are used for asthma patients and can usually be found locally at a drugstore or mass retailer.
because that is what the peak flow meter reads after you have blown into it
you Emily 150 ponds
yes
Spirometer...spirometerSpirometer
bad
50%
my sticking your fingers up your bum hole and timing it for one minute
te average for a 14-15 year old on a peak flow meter is 800.
Venturi Meter is a device used for measuring the flow of the fluid.
Just think about it.
THE SYMBOL FOR Flow Meter is : FI as Flow Indicator