yes those harbor-fright gauges, do read wrong. see them 50 PSI off or out of the box new and the needle is loose. and useless too..
better gauges are sold in most autostores, for sure. the one with the hose is best, not the rubber cone , malarkey.
I have real gauges here (air and top brands), and shop air and can tested the car type it up to 150psi.
but does the saw cut wood, runs means little. (full power matters)