Abstract: A connecting device is adapted to maintain an object, such as a scaffold assembly, at a selected spaced distance from a wall. The device includes a first tubular member having one end connected to the wall, and a second tubular member having one end connected to the object. The other ends of the first and second members are telescopically received in a third tubular member. The position of the first member may be longitudinally adjusted relative to the third member to provide a coarse adjustment of length. The second member is rotatably joined to the third member. A threaded engagement is provided between the first member and a stationary member mounted on the wall. A fine adjustment of length may be obtained by rotating the third member relative to the second member.