5.—(1) In the case of a measuring system used to measure a quantity of liquid fuel—
(a)above the minimum measured quantity of the instrument, the maximum permissible error shall be determined in accordance with Table 1 in Schedule 5 to the 2006 Regulations; and
(b)equal to the minimum measured quantity of the instrument, the maximum permissible error shall be determined in accordance with Table 2 in Schedule 5 to the 2006 Regulations.
(2) But the maximum permissible error for a quantity above the minimum measured quantity of the instrument shall not be less than the maximum permissible error for a quantity equal to the minimum measured quantity.
(3) Where the instrument falls within an accuracy class of 0.3, 0.5, 1.0, 1.5 or 2.5, it shall, for a quantity set out in column 1 of the relevant Table, operate within the maximum permissible error set out in column 2, 3, 4, 5 or 6 of that Table for that class and that quantity.