The basic welding symbol consists of the reference line, about which the weld symbol and dimensions are located, and an arrow designating the location for the weld. This chapter from the Welding Handbook, 9th Ed., Vol. 1, examines each component of the welding symbol reference line required arrow required tail basic weld symbol dimensions and other data finish symbols specification, process, or other references and supplementary symbols. It applies the welding symbols to common types of welds groove, fillet, plug, slot, spot, projection, seam, stud, and edge. Also covers brazed joints, soldering symbols and joints, and the elements of nondestructive examination symbols. Examples are in U.S. Customary units.