Filing Block
A contrivance made to take the place of the filing rest, which was made of boxwood or bone. It consists of a cylinder of hardened steel rivetted upon a staff which in turn enters a split socket. The surface of the steel cylinder is grooved with various sizes of grooves for the different sizes of wire, or to suit any work, as shown in Fig. 133. The cylinder is revolved until the desired size groove is brought uppermost, when the split socket is placed between the jaws of a vise, and the vice closed, thus holding the cylinder in the desired position. Fig. 133 illustrates Mr. Ide's patent block which is well made and of superior material.