The gas department will, at its own expense, make periodical tests and inspections of its meters in order to maintain a high standard of accuracy of said meters. The gas department will make additional tests or inspections of its meters at the request of the customer. If tests made at a customer's request show that the meter is accurate within two percent (2%), either slow or fast, no adjustment will be made in the customer's bill, and the testing charge of one dollar ($1.00) per meter will be paid by the customer, said amount to be included in the next bill sent to the customer by the gas department. In case the test shows the meter to be in excess of two percent (2%), either slow or fast, an adjustment shall be made in the customer's bill over a period of not to exceed thirty (30) days prior to the date of such test, and cost of making the test shall be borne by the gas department.
(1970 Code, § 13-221)