Revision as of 00:46, 16 October 2007 by Ok(talk | contribs)(Based on Glossary of Bridge Terminology; Chapter LXXX of J.A.L. Waddell's Bridge Engineering (New York: Wiley, 1916))
A machine consisting of several rollers, mounted in a frame, having intermeshing gears producing a positive motion; used in shaping steel ingots into bars, beams, angles, etc.