Ala. Code § 8-16-105: Sale of Oil at Retail Regulated.

Any person engaged in the business of the sale of oil at retail shall use a standard liquid measure, which measure shall not be a larger capacity than the amount of the purchase by any purchaser; provided, however, that this section shall not prevent the use of a correct liquid-measuring device when so located and disposed as to be clearly visible to and readable by the customer from any position which he may reasonably be expected to assume.