I do need a new pump. I use the Hurricane Air Sceptre, and while it is easy to use, light and small, I'd prefer a pump with a gauge. I am happy to report that folding tires (my first experience) are easier to mount the second time.

EDIT: Turns out, the tire did its job - the thorn was not responsible for the leaky tube. It was the rim tape, which is more like a rigid plastic. The overlap created a sharp edge which I suspect is what cut into the tube for an ever so slow leak. Rigged with a piece of a Ziploc bag folded over and secured with Scotch tape over the sharp edge, for now.

Any recommendations for a solid frame pump with a gauge?