Lamp caps and holders together with gauges for the control of interchangeability and safety-
Part 2: Lampholders (IEC 60061-2-1969+supplements A:1970 to S:1997+A18:1998 to A35:2006, modified);
German version EN 60061-1:1993+A1:1995 to A7:1997+A18:1988 t