(a) A cherry measurement tank shall be designed to be in a normal operating position when it is in level.

(b) A tank shall be of the center reading type, that is, it shall be so designed that a gauge rod, when properly positioned for use, will be approximately in the vertical axis of the tank centrally positioned with respect to the tank walls.

(c) A tank shall be rectangular or square in design but its length shall not exceed its width by more than one third.

(d) The cross sectional area of a tank shall be constant at any level and the tank shall be so constructed that under any condition of lading it will not be distorted sufficiently to cause a change in the capacity at any level equal to more than 16 cubic inches. This requirement prescribes a limit on permissible distortion only, and is not to be construed as an additional tolerance to subdivision (h) hereof.

(e) A tank shall be of such material, design and construction that under normal handling it will maintain its rectangular or square design and required accuracy for a reasonable length of time.

(f) A tank shall be conspicuously and permanently marked to indicate the cubic capacity of the tank per inch depth throughout its measurement range.

(g) A tank manufactured and offered for sale after the effective date of this section shall be marked with a model number, serial number and the name and address of the manufacturer.

(h) The maintenance and acceptance tolerance on a tank with a capacity of 30 cubic feet or less shall be 150 cubic inches in excess or deficiency, that is, the cubical content at any point in the tank within the measurement range shall not differ more than 150 cubic inches from a calculated volume determined by multiplying the depth of the tank from that point by the indicated cubical capacity of the tank per inch depth, except as provided for in subdivision (i) hereof.

(i) The maintenance tolerance for a tank now in use for the determination of volume measurement shall be one percent excess or deficiency within the measurement.