SCHEDULE 4USE FOR TRADE OF REGULATED NON-AUTOMATIC WEIGHING INSTRUMENTS IN GREAT BRITAIN
Operation of regulated non-automatic weighing instrument7
A person must not use a regulated non-automatic weighing instrument for trade unless it is erected in such a manner that the operator can, readily take up a single position from which he can—
a
see directly or with the aid of mirrors, closed-circuit television or other permanently installed facilities, the whole of the unladen load receptor;
b
operate the instrument's controls; and
c
obtain a weight reading from the instrument.