Abstract: An adjustable work surface arrangement has a primary work surface, a secondary work surface, a link system, a link brake mechanism arranged to selectably prevent or permit rotation of the first end of the link system, a tilt mechanism mechanically connecting the primary work surface and the secondary work surface and a tilt brake mechanism to selectably prevent or permit tilting of the secondary work surface relative the second end. The link system is pivotably attached at a first end to the primary work surface and at a second end to the secondary work surface, to permit the secondary work surface to be displaced relative the primary work surface. The tilt mechanism connects the primary work surface and the secondary work surface, so that when the first end of the link system is pivoted about a first axis, an angular position of the secondary work surface with respect to the primary work surface is kept substantially constant.