Lamp caps and holders together with gauges for the control of interchangeability and safety - Part 3: Gauges (IEC 34B/1971/CDV:2018); German version EN 60061-3:1993/prA56:2018
Lamp caps and holders together with gauges for the control of interchangeability and safety - Part 3: Gauges (IEC 60061-3:1969 + supplements A:1970 to U:1997 + A20:1998 to A56:2019, modified); German version EN 60061-3:1993 + A1:1995 to A7:1997 + A20:1998 to A56:2019— 1074 стр.