FPA-Mk2 Overview Video
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Although available for use worldwide, FPA-Mk2 is used mainly in the UK and is the preferred measurement method of UK government agencies.
Current Status: The method is stable, the rule not having changed since 1988. The method has been transposed into an International Standard by ISO and has been published as an International Standard towards the end of 2002 as ISO/IEC 20968:2002(E).