a) the name or trademark of the manufacturer;
b) the measurement class, meter code and pressure loss (MPa);
c) the year of manufacture and number;
d) one or two arrows indicating the direction of flow marked on the meter's case, but should not be marked with arrows on the cover;
e) the mark of type approval;
f) if more than 1MPa, the nominal pressure (PN), MPa;
g) if the meter can only work in the vertical or horizontal position, the letter V (for vertical) or H (for horizontal);
h) the nominal caliber of the water meter (DN).