120.—(1) In testing platform weighing machines fitted with relieving gear, the inspector shall satisfy himself that—
(a)the machine falls within the prescribed limits of error when it is put steadily out of and into gear;
(b)the plate or platform is entirely disengaged from its bearings when the machine is in relief.
(2) Platform weighing machines and weighbridges shall indicate the same weight within half the prescribed limits of error when a load equal to one-quarter (or as near thereto as is practicable) of the capacity of the instrument is placed successively in the centre and near each end or corner of the platform.
(3) Platform weighing machines and weighbridges shall also fall within the prescribed limits of error when a load equal to the capacity of the machine (or as near thereto as is practicable) is uniformly distributed over the platform.