Gives procedures for determining the mass resistivity and electrical volume resistivity of solid (non stranded) metallic conductor and resistor materials, and the resistance per unit length of solid conductors (of uniform cross sectional area) of metallic materials. Sets out the routine and reference methods of measuring the resistivity of metallic materials. These methods are meant not only to apply to copper, but also to alloys and metals that may be used for conductor purposes, such as aluminium.