A jack includes a base, a guide extending from the base, and an extensible
member having an extensible fit with the guide and extending from the
guide to have a free end. A support is located at the free end of the
extensible member. An actuator is capable of extending the extensible
member. The guide and extensible member have portions which are laterally
offset with respect to the base and the support such that when the
support is in pressure engagement with a panel, the laterally offset
portions are disposed adjacent one side of the panel to leave an area
between opposite sides of the panel substantially unobstructed.