IKEA

From The Manufacturer You can easily adjust the height of the desk between 27 1/2″ and 47 1/4″ by just cranking the handle and get the best position for both sitting and standing. Comfortable for left- and right-handers, as the crank handle can be mounted on the left or right side. The crank handle slides in under the table top when not in use for a clean, uncluttered look.