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2. Chinese siege weapons - Wikipedia

   en.wikipedia.org/wiki/Chinese_siege_weapons

   A hinged folding ladder known as the "cloud ladder" was quite prominent. Originally it used a counterweight to unfold once within reach of the enemy walls, but the contraption proved to be too vulnerable, and switched to a simple pulling mechanism during the Song dynasty .

3. Wing Enterprises - Wikipedia

   en.wikipedia.org/wiki/Wing_Enterprises

   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.

4. Ladder - Wikipedia

   en.wikipedia.org/wiki/Ladder

   The safest angle for a ladder is 75.5°; if it is too shallow, the bottom of the ladder is at risk of sliding, and if it is too steep, the ladder may fall backwards. This angle is achieved by following the 4 to 1 rule for a ladder placed on a vertical wall: for every four feet of vertical height, the ladder foot should move one foot from the wall.

5. Walz ladder factory comment was argument border wall is ... - AOL

   www.aol.com/walz-ladder-factory-argument-border...

   The full context of this clip shows Walz's ladder factory reference was part of an argument that a wall is an ineffective way to secure a border. Walz didn't reference or say he supports helping ...

6. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Attic ladder - Wikipedia

   en.wikipedia.org/wiki/Attic_ladder

   An attic ladder (US) or loft ladder (UK) is a retractable ladder that is installed into an attic door/access panel. They are used as an inexpensive and compact alternative to having a stairway that ascends to the attic of a building. They are useful in areas with space constraints that would hinder the installation of a standard staircase.