Abstract: A plumb bob support adapted for use by pipe fitters by which the plumb bob can be quickly and accurately suspended from a pipe or similar cylindrical object with the plumb bob being aligned with the center of the pipe thereby enabling the plumb bob to accurately indicate a center point of the pipe on a surface below the pipe. The support includes a pair of elongated, arcuate arms generally in the form of a caliper used for measuring outside diameters of pipes and the like with pipe engaging clips or jaws mounted on the facing ends of the arms by a universal ball and socket connection. The arms are pivotally connected and include a swivelly mounted hook to which the plumb bob can be connected. The arms also include laterally extending pins on which a bubble level can be supported to accurately position the pipe engaging clips in horizontal alignment thereby assuring that the hook and thus the plumb bob will be accurately aligned with the center line of the pipe.