The issue of subsequent verification as originally being a workhorse of legal metrology in protection of public interests is now in the spotlight of the metrology community, basically for two reasons: firstly, as the wave of major liberalization efforts in legal metrology in recent years slowly subsides, more attention should be paid to the implications for in-service operations over legally controlled measuring instruments having naturally a much larger impact on the protection of public interests. Secondly, activities of manufacturers and other bodies attract more attention to this subject in an effort to secure more impact on these services, as was highlighted for example at the OIML session of the International Metrology Congress 2005 in Lyon, France. This is why it is now urgent to explore the underlying concepts behind this matter in view of the current situation. This paper does this from the perspective and experience of a Government body responsible for operations of legal metrological control in one of the new EU member countries now exposed to a rather "hectic" development.
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