Applies to general-purpose cathode-ray oscilloscopes for measuring electrical quantities. Is also applicable to multitrace oscilloscopes and complete assemblies of oscilloscopes with detachable or incorporated parts. Describes the standardization of methods of expression of the properties of cathode-ray oscilloscopes and more particularly the definition of special terminology and catalogue data related to these types of apparatus and the specification of conditions and methods for testing these types of apparatus in order to verify compliance with properties claimed or specified by the manufacturer.