§ 67. Inspection of gas and electric meters. 1. The commission shall appoint inspectors of electric and gas meters whose duty it shall be, when required by the commission, to inspect, examine and ascertain the accuracy of any and all electric and gas meters used or intended to be used for measuring and ascertaining the quantity of electric current or gas furnished for light, heat or power by any person, corporation or municipality to or for the use of any person or corporation, and to inspect, examine and ascertain the accuracy of all apparatus for testing and proving the accuracy of electric and gas meters, and when found to be or made to be correct the inspector shall stamp or mark all such meters and apparatus with some suitable device, which device shall be recorded in the office of the secretary of state. No corporation, person or municipality shall furnish, set or put in use any electric or gas meter the type of which shall not have been approved by the commission.

2. Every gas corporation, electric corporation and municipality shall provide, repair and maintain such suitable premises and apparatus and facilities as may be required and approved by the commission for testing and proving the accuracy of gas and electric meters furnished for use by it, and by which apparatus every meter may be tested.

3. If any consumer to whom a meter has been furnished shall request the commission in writing to inspect such meter, the commission shall have the same inspected and tested; provided, however, that repeated inspections and tests shall not be mandatory.

4. The commission shall prescribe such rules and regulations to carry into effect the provisions of this section as it may deem necessary.