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  2. Aerial work platform - Wikipedia

    en.wikipedia.org/wiki/Aerial_work_platform

    Replacing an advertising poster in London using an aerial work platform. An aerial work platform (AWP), also an aerial device, aerial lift, boom lift, bucket truck, cherry picker, elevating work platform (EWP), mobile elevating work platform (MEWP), or scissor lift, is a mechanical device used to provide temporary access for people or equipment to inaccessible areas, usually at height.

  3. Tow hitch - Wikipedia

    en.wikipedia.org/wiki/Tow_hitch

    The trailer hitch ball attaches to a ball mount; with a diameter typically 1 ⁄ 16 inch (1.6 mm) larger than the ball bolt/shank diameter. [2] The ball mount must match the SAE hitch class. [ 3 ] The ballmount for a receiver-type hitch is a square bar that fits into a receiver attached to the vehicle.

  4. Aerial rigging - Wikipedia

    en.wikipedia.org/wiki/Aerial_rigging

    Aerial artists, both professional and amateur, often become riggers out of necessity. They generally learn to rig what they need. WLA (Weak Link Analysis) is the process of systematically analyzing aerial rigging for the weakest link or links in the system. WLA is the most common process used by aerial riggers to assess and improve rigging.

  5. Scaffolding - Wikipedia

    en.wikipedia.org/wiki/Scaffolding

    Scaffolding for rehabilitation in Madrid, Spain [1] Scaffolding for renovation on the Virgin Mary statue, Santiago de Chile, Chile.. Scaffolding, also called scaffold or staging, [2] is a temporary structure used to support a work crew and materials to aid in the construction, maintenance and repair of buildings, bridges and all other human-made structures.

  6. Royal Engineers bridging and trackway equipment - Wikipedia

    en.wikipedia.org/wiki/Royal_Engineers_bridging...

    BR-90 GSB The BR-90 GSB is the primary general support bridge. It uses the same modular components as the Close Support Bridges. A standard bridge set is carried, launched and recovered from 3 specialist vehicles (1 x Automotive Bridge Launching Equipment (ABLE) and 2 x Bridging Vehicles (BV).

  7. Fly system - Wikipedia

    en.wikipedia.org/wiki/Fly_system

    Fly loft of the Theater Bielefeld in Germany. A fly system, or theatrical rigging system, is a system of ropes, pulleys, counterweights and related devices within a theater that enables a stage crew to fly (hoist) quickly, quietly and safely components such as curtains, lights, scenery, stage effects and, sometimes, people.

  8. Whip antenna - Wikipedia

    en.wikipedia.org/wiki/Whip_antenna

    Whip antennas for portable radios are often made of a series of interlocking telescoping metal tubes, so they can be retracted when not in use. Longer whips, made for mounting on vehicles and structures, are made of a flexible fiberglass rod around a wire core and can be up to 11 m (35 feet) long.

  9. Jackup rig - Wikipedia

    en.wikipedia.org/wiki/Jackup_rig

    A jackup rig or a self-elevating unit is a type of mobile platform that consists of a buoyant hull fitted with a number of movable legs, capable of raising its hull over the surface of the sea. The buoyant hull enables transportation of the unit and all attached machinery to a desired location.

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