Abstract: A tool for deburring the inside wall of welded tubes includes a tool body carrying a cutter, and a lower roller is linked to the body, being urged at a constant force against the tube wall; the body carries an upper roller linked to a rod that is accessible externally to a tube receiving the tool for urging the upper roller against the tube diametrically opposed to the lower roller. The pressure differential effective on the upper roller and the lower roller is measured for determining any drop in effective cutting forces, variation in cutting depth or the like.

Abstract: An improved molded bathtub fixture adapted to be manufactured as a single piece to allow separation into two integral elements for installation and handling is disclosed. The subject bathtub fixture, including a bathtub and three upwardly extending contiguous walls is characterized by having a lateral bulge which extends for the length of the walls and which serves to permit the molded bathtub fixture to be separated into two separate pieces at a construction site to facilitate handling and installation.