.01 Meter Shop.

A. Meter Shop. Each utility shall maintain or designate a meter shop where meters may be inspected, tested, and repaired. The shop shall be open for inspection by authorized representatives of the Commission at all reasonable times, and the facilities and equipment, as well as the methods of making measurements and tests, shall be subject to the approval of the Commission.

B. Accuracy of Test Equipment. The accuracy of the test equipment and of the test procedures shall be such that the overall error will not exceed 0.3 of 1 percent.