9 Rescue apparatus, none being computers, computer hardware or computer software, for use in the rescue of people, namely, harnesses, lifelines, safety belts, self-retracting lanyards, lanyards, energy absorbers, winches, fall arrest devices, guard rails, tripods, davit arms, workseats, slings, anchors, connectors, load arrestors, hoist systems, ascenders, descenders, ropes, and trolleys; safety rope systems for persons working at heights comprising cables and cable grabs or sleeves, rails, shuttles, winches, descender ropes, slings, connectors, and lifelines; mechanical safety apparatus; parts, fittings for all the forgoing