http://digilab.ptb.de/vocab/http://digilab.ptb.de/vocab/skos/66260Metrology and its legal aspects http://digilab.ptb.de/vocab/skos/66260 VIML BT http://digilab.ptb.de/vocab/skos/66260 legal units of measurement NT http://digilab.ptb.de/vocab/skos/66260 metrological authority NT http://digilab.ptb.de/vocab/skos/66260 national responsible body NT http://digilab.ptb.de/vocab/skos/66260 legal metrology regulation NT http://digilab.ptb.de/vocab/skos/66260 law on metrology NT http://digilab.ptb.de/vocab/skos/66260 legal metrology NT