A Brinkley stick is a safety device used to discharge high voltage capacitors and ensure HT (high voltage) electrical circuits are discharged. The tool consists of a hook attached to the end of an insulated rod. The hook is connected by a length of insulated wire to a suitable ground or earth, often via a suitably valued resistor. Named after Charles Brinkley (ca. 1871-1963) an amputee ferry boatman who carried radar staff across the river Deben.
One of the Trade test colour films, On the Safe Side includes a fictionalised sequence during which the life of a technician is preserved by his decision to deploy a Brinkley stick.
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