#1 What is the diameter (inner and outer) of the little clear flexible tube it comes with? (the one you insert into the pipe)
The clear tubing that comes with the manometer is 3/16” outside diameter and an 1/8” inside diameter.
#2 Can this be used to measure pressure and flow rate of water?
I doubt it since there is no gauge to measure air pressure or flow rate. But I do know that it does a great job on indicating that there is a flow of air in a pipe.
