Regulation 107

Dead-weight machines shall indicate the same weight within half the prescribed limits of error when a load equal to one-quarter of the capacity of the machine is placed successively at the middle of the front of each platform and centrally over the knife edges on each side of each platform.

Except in the case of double machines, dead-weight machines shall also fall within the prescribed limits of error when a load equal to the capacity of the machine is uniformly distributed over each platform.

Double machines shall also fall within the prescribed limits of error when a load equal to half the capacity of the machine is uniformly distributed over both goods platforms, a load equal to the capacity of the machine being uniformly distributed over the weights platform.