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  2. Campus board - Wikipedia

    en.wikipedia.org/wiki/Campus_board

    The earliest campus boards, still used today, were made of horizontal thin slats or wood rails attached to an inclined board in a ladder-like configuration. Later versions have utilized bolt-on climbing holds or sections of a pipe. A campus board is generally set at an overhanging angle of inclination.

  3. Airstair - Wikipedia

    en.wikipedia.org/wiki/Airstair

    An airstair is a set of steps built into an aircraft so that passengers may board and alight the aircraft. The stairs are often built into a clamshell-style door on the aircraft. Airstairs eliminate the need for passengers to use a mobile stairway or jetway to board or exit the aircraft, providing more independence from ground services.

  4. Ladder - Wikipedia

    en.wikipedia.org/wiki/Ladder

    An extension ladder. A ladder is a vertical or inclined set of rungs or steps commonly used for climbing or descending. There are two types: rigid ladders that are self-supporting or that may be leaned against a vertical surface such as a wall, and rollable ladders, such as those made of rope or aluminium, that may be hung from the top.

  5. Crosswalks in North America - Wikipedia

    en.wikipedia.org/wiki/Crosswalks_in_North_America

    Pictograms of an "upraised hand" (symbolizing dont walk) and a "walking person" (symbolizing walk) were made optional in the 1971 version of the MUTCD; [12] the 2000 MUTCD no longer allowed provided an option for word legends, [9] and the Federal Highway Administration officially confirmed [12] that the pictograms are required in the 2009 ...

  6. Jet bridge - Wikipedia

    en.wikipedia.org/wiki/Jet_bridge

    United Airlines planes lined up at their jet bridges at Denver International Airport in March 2014. A jet bridge (also termed jetway, [1] jetwalk, airgate, jetty, gangway, planeplank, aerobridge/airbridge, finger, skybridge, airtube, expedited suspended passenger entry system (E-SPES), or its official industry name passenger boarding bridge (PBB)) is an enclosed connector which most commonly ...

  7. Step stool - Wikipedia

    en.wikipedia.org/wiki/Step_stool

    Step stool with 3 steps. Step stools have a wide range of uses, being an important aid for working at home. The ones with a wide platform, they are very practical for wall painters, who can even walk on the platform without having to go up&down every time they need to change their work area a few inches.