Pipe wrench Pipe wrench A pipe wrench is any of several types of wrench that are designed to turn threaded pipe and pipe fittings for assembly (tightening) or disassembly (loosening). Especially in North America, the Stillson wrench or Stillson-pattern wrench is the usual form of pipe wrench. (The name comes from the original patent holder, who licensed the pattern to multiple manufacturers; the patent expired decades ago.) Another type of wrench often used on pipes, the plumber wrench, is also often called a pipe wrench, depending on locale. The Stillson type is an adjustable wrench/spanner with hardened serrated teeth on its jaws;
Tool of the Trade Tool of the Trade Tool of the Trade is a 1987 science fiction/espionage novel by Joe Haldeman. In the waning years of the Cold War, Nicholas Foley, a Soviet sleeper agent and a survivor of the World War II siege of Leningrad, is a scientist and technological genius quietly working in American academia. He develops an ultrasonic gadget with which he can indetectably control the minds of others. His wife knows his secrets, but loves him too much to turn him over to Federal authorities. When both the Americans and the Soviets find out what Foley has invented, his wife