replacing pots on bench psu
A 10k 10turn pot should work. If you want high stability over time, you want a low temperature coefficient. Otherwise, as the potentiometer gets hot, you might experience drift.

In addition: while I think this is no longer the case on modern power supplies, I remember that some older power supplies would pass a not-insignificant amount of current through the set potentiometers - enough to damage smaller potentiometers. Make sure to get the right power rating.