Working Group 2: Weights and Weighing Instruments

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The following Terms of Reference have been adopted for WELMEC Working Group 2:

To consider and provide guidance on Directive 2014/31/EC, and Directive 2014/32/EC with regard to Automatic Weighing Instruments (AWIs) and multidimensional instruments, to facilitate all aspects of implementation apart from inspection, enforcement and reverification.

To consider and provide guidance on weights and those AWIs falling outside of Directive 2014/32/EC, being covered by OIML International Recommendations:

  • R 47 Standard weights for testing of high capacity weighing machines
  • R 52 Hexagonal weights - Metrological and technical requirements
  • R 111 (all parts) "Weights of classes E1, E2, F1, F2, M1, M1-2, M2, M2-3 and M3"
  • R 134 (all parts) 'Automatic instruments for weighing road vehicles in motion and measuring axle loads'

May 2015


Ivan Kriz
Czech Metrology Institute, CMI (Czech Republic)


Sven Vasterling
Physikalisch-Technische Bundesantalt, PTB (Germany)

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