http://digilab.ptb.de/vocab/http://digilab.ptb.de/vocab/skos/66244measuring system http://digilab.ptb.de/vocab/skos/66244 basic terms BT http://digilab.ptb.de/vocab/skos/66244 ancillary device RT http://digilab.ptb.de/vocab/skos/66244 adjustment of a measuring system RT http://digilab.ptb.de/vocab/skos/66244 measuring instrument RT http://digilab.ptb.de/vocab/skos/66244 reference operating condition RT http://digilab.ptb.de/vocab/skos/66244 rated operating condition RT http://digilab.ptb.de/vocab/skos/66244 indication RT