Tangent-wheel. A wheel whose teeth are formed to work with a screw or worm.
Tap. 1. A tool for cutting threads in holes or bores. 2. A device for shutting off or turning on the flow of water through a pipe.
Taper-tap. A tap that has part of the thread turned off in order that it may enter the hole easily and start to cut the thread. It is sometimes termed the first tap.
Tapped. 1. Threaded internally. 2. Having a connection that branches from the main pipe or flow.
Target. A frame used in setting shafting in line.
Temper. 1. The degree of hardness that has been imparted to steel by heating and suddenly cooling it. 2. A term employed by steel makers with reference to the percentage of carbon contained in steel.
Tempering. Tempering consists in reheating hardened steel and thus modifying or reducing its degree of hardness.
Template or Templet. A piece of metal made to shape, to serve as a pattern for one or more of the work surfaces.
Thread-gauge. A threaded cylinder or bore that serves as a standard of reference for the shape and diameter of a screw thread.
Threading-tool. A tool for cutting screws in the lathe.