An adjustable desk platform comprising: an upper platform defining a substantially planar work surface; a lower platform defining a second substantially planar work surface; at least one set of pivot arms connecting the lower platform and the upper platform, each set of pivot arms comprising a first arm and a second arm, wherein each set of pivot arms is adapted to move the upper platform substantially in parallel with the lower platform between a fully raised position and a fully lowered position; a locking mechanism associated with the set of pivot arms, the locking mechanism comprising: a plurality of perforations located in the first arm or the second arm, a locking set fixed with respect to the upper platform, the locking set including at least one anchor adapted to selectively engage at least one of the plurality of perforations, and a handle coupled to the anchor by a linkage, the handle adapted to selectively move the anchor into engagement with respect to at least one of the plurality of perforations; characterised in that the locking mechanism further comprises a first spring fixed in position with respect to the lower platform, wherein movement of the upper platform toward the fully lowered position extends the first spring; a boss located on the first arm or the second arm, the boss adapted to move through an arcuate path as the upper platform moves between the fully raised position and the fully lowered position; and a second spring fixed in position with respect to the lower platform, wherein movement of the upper platform toward the fully lowered position causes the boss to bend the second spring and, optionally, wherein the second spring is a cantilever spring. an upper platform defining a substantially planar work surface; a lower platform defining a second substantially planar work surface; at least one set of pivot arms connecting the lower platform and the upper platform, each set of pivot arms comprising a first arm and a second arm, wherein each set of pivot arms is adapted to move the upper platform substantially in parallel with the lower platform between a fully raised position and a fully lowered position; a locking mechanism associated with the set of pivot arms, the locking mechanism comprising: a plurality of perforations located in the first arm or the second arm, a locking set fixed with respect to the upper platform, the locking set including at least one anchor adapted to selectively engage at least one of the plurality of perforations, and a handle coupled to the anchor by a linkage, the handle adapted to selectively move the anchor into engagement with respect to at least one of the plurality of perforations; a plurality of perforations located in the first arm or the second arm, a locking set fixed with respect to the upper platform, the locking set including at least one anchor adapted to selectively engage at least one of the plurality of perforations, and a handle coupled to the anchor by a linkage, the handle adapted to selectively move the anchor into engagement with respect to at least one of the plurality of perforations; characterised in that the locking mechanism further comprises a first spring fixed in position with respect to the lower platform, wherein movement of the upper platform toward the fully lowered position extends the first spring; a boss located on the first arm or the second arm, the boss adapted to move through an arcuate path as the upper platform moves between the fully raised position and the fully lowered position; and a second spring fixed in position with respect to the lower platform, wherein movement of the upper platform toward the fully lowered position causes the boss to bend the second spring and, optionally, wherein the second spring is a cantilever spring.