bedir than
Full Moon Storyteller
Depending on what sort of scientist they are, I'd probably give them proficiency in either astronomer's/navigation tools (physics/math) or alchemist's tools (chemistry, biology).
Otherwise, Jaelis's post seems about right. Their advanced knowledge would allow them to pick up the use of whichever set of tools would be closest to their scientific focus without trouble (assuming they hadn't already used them before), and to be able to fudge their way through most of the others.
I'd be willing to give them all three tools, but no languages (if really an outworlder)