Not nearly handy enough to do something like this myself but I would like to test if my water regulator failed. After replacing two toilet refill kits in less than a month, I think the water pressure is too high, seems higher than before.
So I need to buy a pressure monitor kit and measure the water pressure, then try reducing the water pressure by turning a screw counter clockwise. I can measure at the outside hose bib?
And if it doesn’t go down then I need a plumber to change the regulator.