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The ladder itself is capable of being converted into several heights and configurations from a single ladder. Configurations include a straight or extension ladder, an A-frame ladder, a staircase ladder (an uneven A-frame for use on stairs), a 90° ladder, and both sides of a scaffolding trestle achieved through a triple locking hinge.
Telescoping in mechanics describes the movement of one part sliding out from another, lengthening an object (such as a telescope or the lift arm of an aerial work platform) from its rest state. [1] In modern equipment this can be achieved by a hydraulics , but pulleys are generally used for simpler designs such as extendable ladders and amateur ...
X-deck ladder, a US patented ladder design that is a combination ladder and scaffold. [3] [4] Ladder of a fire escape in New York. Rigid ladders were originally made of wood, but in the 20th century aluminium became more common because of its lighter weight. Ladders with fiberglass stiles are used for working on or near overhead electrical ...
For example, Caterpillar's smallest mini-excavator weighs 2,060 pounds (930 kg) and has 13 hp; [8] their largest model is the largest excavator available (developed and produced by the Orenstein & Koppel, Germany, until the takeover 2011 by Caterpillar, named »RH400«), the CAT 6090, which weighs in excess of 2,160,510 pounds (979,990 kg), has ...
A-frame derrick. An A-frame derrick is one in which the boom is hinged from a cross member between the bottom ends of two upright members spread apart at the lower ends and joined at the top; the boom point secured to the junction of the side members, and the side members are braced or guyed from this junction point.
New York City Fire Department Ladder Company 3, also known as Ladder 3, is a fire company and one of two ladder companies in the New York City Fire Department's (FDNY) 6th Battalion, 1st Division. It is housed at 108 E. 13th St., along with Battalion Chief 6, and has firefighting stewardship over a several square block area of Manhattan ’s ...
The German Army G36 assault rifles have a more or less built in dual combat sighting system consisting of a ZF 3×4° telescopic sight combined with an unmagnified electronic red dot sight. The dual combat sighting system weighs 30 g (1.1 oz) due to a housing made out of glass fiber reinforced polyamide.
The most widely known edition of snakes and ladders in the United States is Chutes and Ladders, released by Milton Bradley in 1943. [14] The playground setting replaced the snakes, which were thought to be disliked by children at the time. [14] It is played on a 10x10 board, and players advance their pieces according to a spinner rather than a die.
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