The OP might want to clarify. Some people consider a frame pump to be a very specific item: A portable pump that is spring-loaded to lock into the frame. I had Zefal like that, I think, but I don't think it had a gauge.

In the more general, portable pump area, I have also used the Topeak Road Morph with a gauge. The gauge was okay, but not great. It would kind of jump between values, getting stuck at one reading for a bit, and then jumping to a higher value all at once after a few pumps. Made me think that it wasn't that accurate. But it did give a general idea of the pressure.

Replaced that with a Lezyne HV pump, which I like a lot better, but it's rather bulkier and might be a little heavier. Reviews seemed to indicate that many didn't find the gauge that accurate, so I got it without the gauge, and bought a separate, Topeak digital gauge. Never really used the gauge yet, because I've only had occasion to use the pump close to home, so I pump until it feels firm enough to ride on, then I take care of tuning the pressure with the floor pump at home. I guess on an extended trip, I'd be more likely to use the gauge, and I bought it with that in mind, but I've also moved to higher volume, lower pressure tires, so sometimes determining my air needs is as easy as squeezing the tire. It's possible I won't travel with the gauge at all.

Regardless, if you're really worried about your pressure, I would consider that a more accurate way to go: A good pump and a separate gauge.