A sequential stepped movement staging device comprises six legs 70 of equal length extending radially from a central sphere 46 in an X-Y-Z orthogonal relationship. The sphere 46 and legs 70 are held in a horizontally fixed position relative to a support surface 14 by a holder including a primary retaining member 40, a secondary retaining member 74 fixed in superposition to the primary retaining member 40, and an alignment cylinder 84. The secondary retaining member 74 is slidably disposed in the alignment cylinder 84 to allow for vertical movement of the sphere 46, legs 70, and retaining members 40, 74. One of six actuating rods 94 pushes down on one of three upwardly extending legs 70H thereby rotating the sphere 46 and causing two of three downwardly descending legs 70L to move a work surface 16 capable of horizontal sliding movement over the support surface 14 from a first position to a second position. In one embodiment of the invention shown in FIG. 12, a hydraulic feedback system maintains downward pressure on the sphere 130 via a central piston shaft 174 during the second half of a step.