13.—(1) An automatic discontinuous totaliser shall record by a durable means the measurement result accompanied by information to identify the particular transaction, when—
(a)the measurement is non-repeatable; and
(b)the automatic discontinuous totaliser is normally intended for use in the absence of one of the trading parties.
(2) Additionally, a durable proof of the measurement result and the information to identify the transaction shall be available on request at the time the measurement is concluded.