Ohio Revised Code Title XLIX. Public Utilities § 4933.11

All gas companies supplying the public with artificial or natural gas shall provide for their use a meter-prover, the holder of which must contain not less than five feet.  Such meter-prover shall be tested in the place where it is to be used, stamped, and sealed by the public utilities commission.  Such tests shall be open to the public.  All gas companies supplying artificial or natural gas for illuminating purposes shall, on the order of the commission provide for their own use a photometer of a type approved by such commission.  Any person, firm, or corporation supplying the public with artificial or natural gas which fails to comply with this section shall forfeit to the state not less than twenty-five nor more than one hundred dollars to be recovered upon the complaint of any consumer, in the name of the state, before any court of competent jurisdiction.