Manner of use
16.—(1) Where a cold-water meter is marked with—
(a)a temperature range, it shall not be used for trade in temperatures outside that range;
(b)a flowrate range, it shall not be used for trade at a flowrate outside that range.
(2) Where a cold-water meter bears a mark which signifies the manner and purpose of use, it shall not be used for trade in a manner or for a purpose which does not accord with that marking.
(3) A cold-water meter shall not be used for trade in circumstances—
(a)in which it may be prevented from operating consistently or accurately; or
(b)which are likely prematurely to degrade its metrological characteristics.
(4) A cold-water meter shall not be used for trade unless, when adjusted, the calibration of the instrument is set as close to zero as is practicable.