Row about two pounds wanted for a steering device (6)
I believe the answer is:
tiller
'a steering device' is the definition.
(device for steering a boat)
'row about two pounds' is the wordplay.
'row' becomes 'tier' (tier is a kind of row).
'about' means one lot of letters goes inside another.
'two' shows that letters should be duplicated.
'pounds' becomes 'L' (L can represent the monetary pound).
'l' duplicated is 'll'.
'tier' going around 'll' is 'TILLER'.
'wanted for' is the link.
(Other definitions for tiller that I've seen before include "Boat's steering handle" , "Shoot" , "What boatman uses" , "one working on the land" , "Steering gear - one who ploughs" .)