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2. John H. Balsley - Wikipedia

   en.wikipedia.org/wiki/John_H._Balsley

   The title of Ladder Keeper does not appear after 1831 (although there is a gap in records from 1835 to 1856). William Balsley, an uncle, was on the town council at the time the office was created. Although none of his family seems to have held this new office, one can only speculate whether it somehow stimulated an interest in ladders on the ...

3. Stairs - Wikipedia

   en.wikipedia.org/wiki/Stairs

   Each step is composed of a tread and a riser. Some treads may include a nosing. Tread: The part of the stairway that is stepped on. It is constructed to the same specifications (thickness) as any other flooring. The tread "depth" is measured from the back of one tread to the back of the next. The "width" is measured from one side to the other.

4. Stair tread - Wikipedia

   en.wikipedia.org/wiki/Stair_tread

   [7] IDEO Labs' interns created a musical staircase during summer of 2011. Each tread played a different sound when stepped on. [8] Johns Hopkins University students turned a Hackerman Hall staircase into a piano, with a new note per step. The Hopkins Robotics Club modified the staircase so the treads played the C scale. [9]

5. 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!

6. 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.

7. Pilot ladder - Wikipedia

   en.wikipedia.org/wiki/Pilot_ladder

   The ladders are made by threading and fixing a series of hardwood, machined steps, each not more than 400 mm × 115 mm × 25 mm (15.75 in × 4.53 in × 0.98 in), onto two pairs of minimum 18 mm (0.71 in) diameter manila ropes, and binding each step to the ropes at 310 mm (12 in) (+- 5 mm, 0.20 in) intervals.