Abstract: An improved clamp is disclosed. The clamp comprises a location surface adapted to lie against an external surface of the object to be engaged, and first and second clamp members adapted for movement relative to one another. The first and second clamp members are adapted to be brought into engagement with the object, such that the object or part of the object is captivated between the location surface and the first and second clamp members.
Abstract: Apparatus is disclosed for use in construction. The apparatus comprises a base unit adapted to be fixed to a structure in an elevated position relative to the ground, and a mechanism for moving a construction worker and/or construction material relative to the base unit.