Yes.Honest question: do you really think a 12 dollar gauge from mcmaster is somehow a different grade of cheap chinese shit from what a bike pump company buys to put on there? My specialized pump goes to 70 and I've checked it a few times with a moars expensive gauge....always spot on.
However, if your stock pump gauge goes to 70 psi with 1 psi increments, I would consider not replacing it. That's still rare from what I've seen.