Section 16-11-28 - Meter testing equipment(a) Every gas company furnishing metered gas service shall have access to at least one suitable meter prover maintained in good condition and correct adjustment so that it shall be capable of determining the accuracy of any service meter to within one-half of one percent.(b) Every meter prover shall be supplied with all accessories needed for accurate meter testing and shall be located in a room suitable for the work to be done, protected from draughts and excessive changes of temperature.(c) Every prover shall be accompanied by a certificate signed by a proper authority, giving the date when such prover was last tested and adjusted, or a tag referring to such certificate may be attached when more practicable. These certificates when superseded shall be kept on file in the office of the gas company. Every gas company shall keep the commission informed as to the prover equipment in use, reporting the accuracy at the time of each certification, and notify the commission in writing of any alteration, accident or repair whch might affect the accuracy of any prover.Conn. Agencies Regs. § 16-11-28