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  2. Pilot ladder - Wikipedia

    en.wikipedia.org/wiki/Pilot_ladder

    A pilot ladder is a highly specialized form of rope ladder, typically used on board cargo vessels [1] for the purposes of embarking and disembarking pilots. The design and construction of the ladders is tightly specified [2] by international regulation under the SOLAS regime. Pilot ladders and other boarding arrangements must be carefully ...

  3. Jacob's ladder (nautical) - Wikipedia

    en.wikipedia.org/wiki/Jacob's_ladder_(nautical)

    A pilot ladder has specific regulations on step size, spacing and the use of spreaders. It is the use of spreaders (long treads that extend well past the vertical ropes) in a pilot ladder that distinguishes it from a Jacob's ladder. When not being used, the ladder is stowed away, usually rolled up, rather than left hanging.

  4. Magnet keeper - Wikipedia

    en.wikipedia.org/wiki/Magnet_keeper

    A "horseshoe magnet" made of Alnico 5, about 1 inch high.The metal bar (bottom) is a keeper. A magnet keeper, also known historically as an armature, is a bar made from magnetically soft iron or steel, which is placed across the poles of a permanent magnet to help preserve the strength of the magnet by completing the magnetic circuit; it is important for magnets that have low magnetic ...

  5. Wing Enterprises - Wikipedia

    en.wikipedia.org/wiki/Wing_Enterprises

    Wing Enterprises is an American company headquartered in Springville, Utah company, the largest American manufacturer of ladders as of 2005. [1] The company produces the Little Giant Ladder System, a convertible aluminium ladder system. The founder of Wing Enterprises, Harold Ray "Hal" Wing, came across a prototype of the ladder in Germany in

  6. Magnetic switchable device - Wikipedia

    en.wikipedia.org/wiki/Magnetic_switchable_device

    A magnetic switchable device (often called a magnetic base) is a magnetic fixture that uses one or more permanent magnets in a configuration that allows the external field to be turned on or off. They are used in many applications including optics , metalworking , lifting , and robotics, to attach items to metal surfaces in a secure but ...

  7. Electromagnetic door holder - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_door_holder

    Wall-mounted electromagnetic door holder securing a door in the open position. An electromagnetic door holder (electromagnetic door holder and release or hold-open device, sometimes informally called a mag hold open or electric doorstop) is a simple electromechanical mechanism which can be used to hold a fire door or security door open until given a signal to release.

  8. Holding (aeronautics) - Wikipedia

    en.wikipedia.org/wiki/Holding_(aeronautics)

    A standard holding pattern. Shown are the entry (green), the holding fix (red) and the holding pattern itself (blue) In aviation, holding (or flying a hold) is a maneuver designed to delay an aircraft already in flight while keeping it within a specified airspace; i.e. "going in circles."

  9. Aircraft compass turns - Wikipedia

    en.wikipedia.org/wiki/Aircraft_compass_turns

    A magnetic compass aboard an aircraft displays the current magnetic heading of the aircraft, i.e., the aircraft's directional orientation relative to the Earth's geomagnetic field, which has a roughly north-south orientation. The compass can be used in turns to verify the aircraft is travelling in the desired direction at the conclusion of a turn.

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