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 R:1996, modified); German version EN 60061-3:1993 + A1:1995 + A2:1995 + A3:1995 + A4:1996— 523 стр.
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 A43:2011 + A44:2011, modified); German version EN 60061-3:1993 + A1:1995 to A7:1997 + A20:1998 to A43:2011 + A44:2011— 829 стр.