Lamp caps and holders together with gauges for the control of interchangeability and safety; part 1: lamp caps; supplement 13 to IEC 60061-1:1969

This document serves as an eleventh supplementary amendment to an international specification concerning measuring instruments used for lamp holders, bases, and the verification of their interchangeability and safety. It focuses specifically on the initial section detailing components for lamp caps. The content outlines precise dimensional tolerances and technical criteria necessary to ensure compatibility across various lighting systems globally. By establishing these unified measurement protocols, the text facilitates the seamless integration of different lamp types into their respective fixtures while maintaining rigorous safety standards. It defines the geometric limits and inspection methods required for manufacturers and regulatory bodies to assess whether lamp caps meet the necessary specifications for safe electrical connections. The information presented here is derived from established international engineering principles and represents a critical update to the underlying framework, ensuring that the testing apparatus remains accurate and relevant for current industrial applications without altering the fundamental requirements of the base document.