It shall be unlawful after the approval, testing and sealing of any measuring device and equipment used in delivering liquid fuel, to adjust, repair or alter the same or to cause said measuring device and equipment to be adjusted, repaired or altered, unless approval of a weights and measures official is first obtained; and it shall be unlawful to remove any meter from the tank to which it is affixed at the time of testing and sealing to any other tank, unless immediate written notification is given to a weights and measures official advising of necessity of alterations or change.