Be wary, I had a multi tool taken off me at customs because it could be used to un screw the seats from the plane (it was once done apparently) - I guess a torque wrench could also be used for that.
I don't carry tools in carry on. They take them off you. That's half the point of finding a lightweight torque wrench - so my checked luggage might get below the weight limit.
That was the plan. That way I could save weight in my flight box and I'd have a torque wrench on the road.