This standard gives procedures for determining the electrical volume resistivity and mass 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. It sets out both reference and routine methods of measuring the resistivity of metallic materials. It is intended to cover the need for such methods not only for copper, but also for aluminium and any other metals and alloys that may be used for conductor purposes.