The present invention relates to a roof rack (10) for a vehicle (11). The roof rack ( ) comprises a load carrier bar (13), a first and a second load carrier foot (14), wherein at least the first load carrier foot (14) is displaceable with respect to the load carrier bar (13) to enable the roof rack (10) to be attachable to vehicles (12) of different sizes. The roof rack also comprises a readable indication device (30) enabling the determination of different appropriate positions of the load carrying foot (14). The indication device (30) is displaceable between different positions with respect to the load carrier bar (13) and adapted to be read with respect to a reference point on the roof rack (10), enabling repeatable readings at different positions. The present invention also relates to a method for assembling a roof rack. The roof rack is simple in construction yet easy to use for an end user and does not tend to produce air turbulence around the load carrier bar to any significant degree.