"repair"
in relation to any measuring instrument, means any work carried out on, or any adjustment made to, such measuring instrument in order to restore or maintain it in a certifiable condition but not work carried out on, or adjustment made to, a specified measuring instrument if such work or adjustment does not in ally way change the meteorological characteristics or the accuracy of such measuring instrument;
[Definition inserted by section 1 (e) of Act No. 42 of 1994.]