Chain Tongs 4 : A pipe-turning appliance that has a bar with sharp teeth at one end; the teeth are forced against the pipe by a chain wound around the pipe and secured to the bar. See: Reversing Pipe Wrench
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}