Regulation 99
In the case of every steelyard—
(a)
the shank shall be straight;
(b)
each set of notches or graduations on the shank shall be cut in one plane and shall be at right angles to the shank;
(c)
there shall be fitted a stop or other device to prevent excessive oscillation of the shank;
(d)
end fittings, sliding poises and suspending hooks shall not be readily removable;
(e)
the sliding poise shall be freely movable without risk of injury to the notches or graduations from constant use, and there shall be a stop to prevent it from travelling behind the zero mark or lowest graduation.