Clamp back spacer for conduit

A clamp back spacer for rigid conduit or the like comprising;

• a generally flat base member having opposite upper and lower surfaces, projection means extending outwardly from said upper surface to define a cradle for cradling rigid conduit or the like, recess means in said lower surface for receiving said projection means on another identical base member when an identical pair of such base members are stacked on top of one another, said base member having opposite ends and opposite sides and a transverse centerline extending across said sides centrally between said ends, said projection means and said recess means being located on opposite sides of said transverse centerline so that a pair of identical base members are stackable by reversely positioning such members end-for-end relative to one another, and said projection means and recess means being shaped for preventing relative sliding movement in all directions between a stacked identical pair of said base members.