draft general measure number 0111-oop-c097-18 laying down the metrological and technical requirements for legally controlled measuring instruments including testing methods for type approval and verification of the following legally controlled measuring instruments instruments for measuring the instantaneous values and short- and long-term averages of the 222rn activity concentration in air and water and the 222rn equivalent activity concentration instruments for measuring the instantaneous values and short- and long-term averages of the 222rn activity concentration in air and water and the 222rn equivalent activity concentration may be placed on the market and put into use in the czech republic as legally controlled measuring instruments in accordance with actno505 1990 on metrology as amended. pursuant to the act legally controlled measuring instruments are instruments that are included in the list of the types of legally controlled measuring instruments implementing decree no345 2002 and at the same time intended by the manufacturer importer for measurements of relevance to the protection of public interests in areas of consumer protection contractual relations imposition of sanctions fees tariffs and taxes health protection environmental protection occupational safety or the protection of other public interests protected by special legislation. this means that their purpose is similar to that used for defining the legally controlled products measuring instruments and non-automatic weighing instruments under directives 2014 31 eu and 2014 32 eu. the requirements of this regulation do not apply to measuring instruments not placed on the market in the czech republic for purposes other than the above purposes defined by act no505 1990 on metrology. the purpose of this notified legislation is to lay down metrological and technical requirements for legally controlled measuring instruments of the type specified above. this legislation also lays down the tests for the purposes of type approval and verification of legally controlled measuring instruments of the type specified above.