Lamp caps and holders together with gauges for the control of interchangeability and safety - Part 4: Guidelines and general information; Supplement 3 to IEC 60061-4 (1990)
Replaces existing title page and existing pages 3 and 4, replaces existing data sheet 7007-1-3 (pages 1/10 up to and including 10/10) with 7007-1-4 (pages 1/10 up to and including 10/10).