steady 50lbs oil pressure at all rpms

I don't have an oil pressure gauge other than the slow-as-mollases, depends-on-the-dash-gauge-regulator,factory, rally-dash, points-to-wherever-it-feels-like, gauge. lol.
Same with the temperature gauge. And some days the speed-O jumps around so bad I don't have a clue how slow Ima going. The tach?, now,that's a whole nuther matter. It's an 8000rpm,270* sweep, 4 inch, Autometer. She never lies to me....at least not that I'm aware of. This one time, on a missed shift, I looked over to it and saw the needle crossing over the 8000rpm line.....on it's way, back down. The clutch pedal was already back on the floor. So, maybe, much like my wife, sometimes no doesn't really mean no.