Reed's torpedo levels are convenient for jobsite use due to their modest size. Choose from the general use LV9PM with three spirit tubes, the waterworks LV6WW with 4 vials, or the 9 inch plumber's version LV9PLB also with 4 vials. Each one measures pitch, level and plumb. Each torpedo level features a V-groove edge to set on pipe or conduit. The torpedo level is a great choice for close quarters and provides true measurements in easy-to-read vials.