These lab jacks can raise and lower loads up to 45.4 kg (100 lb). Vertical movement is controlled by a large plastic serrate knob.
The standard lab jack can lift loads through a vertical distance of 191 mm (7.5 in) to a maximum height of 267 mm (10.25 in). Minimum height is 70 mm (2.75 in). The micro jack can lift loads through 57 mm (2.25 in) of vertical travel to a maximum height of 86 mm (3.375 in). Minimum height is 29 mm (1.125 in).
The standard jack base and top plates measure 121 x 140 mm (4.74 x 5.5 in). Both plates are predrilled so that two jacks may be stacked if additional working height is required. The standard jack is also available with or without a removable platform and vertical rod. The platform measures 203 x 203 mm (8 x 8 in) and has a 457 mm (18 in) vertical support rod.
The micro jack base and top plates measure 76 x 75 mm (3 x 3 in). These plates may be removed to expose a smaller plate measuring 38 x 50 mm (1.5 x 2 in).