196An employer shall ensure that a hoist is provided with depth indicators that continuously, accurately and clearly show to the hoist operator the location
(a)
of a shaft conveyance and counterweight,
(b)
in an inclined shaft, of a change in gradient that requires a reduction in hoist speed,
(c)
at which the overwind, underwind and track limit devices are set to operate,
(d)
of any intermediate shaft obstruction,
(e)
of the limits of normal travel for the shaft conveyance and counterweight, and
(f)
of any collar doors, dump doors and crosshead landing chairs.