Abstract: A lift for positioning and supporting a work item vertically during installation while fastening devices are put in place includes a base member, a pivoting lever member supported by a pivot in the base member and a locking device for locking the lever member at a selected position. The lever member includes a pedal portion sized to receive a workboot of a worker. The locking device includes a jamming wedge received through an aperture in the lever member whereby concurrent bias by the workboot on the pedal portion and against the locking device raises the lever member and locks the lever member at the selected position. An alternative embodiment uses a pawl and ratchet assembly as the jamming wedge.