NBN EN 13775-6:2004

This European Standard specifies principles and requirements for measuring multiple and articulated freight wagons. This ensures that the measuring processes are applied in accordance with uniform criteria. It applies to new and modified multiple and articulated freight wagons.
Provisions going beyond the scope of these requirements are generally agreed between the contracting parties involved.
The measuring processes relate to multiple and articulated freight wagons with or without add-ons in their entirety or just part of them if the geometrical structure does not permit anything else. Where appropriate, other measuring processes not specified here are necessary and are specified in each individual case.