ladders and stepladders 
Movable devices of wood or metal, composed of rungs or steps and used to reach relatively high areas.
Suspension ladder whose side rails and rungs are made of cord.
Straight ladder with one end having fixed or detachable hooks to keep the ladder in place on a structure.
Articulating ladder that can be folded up into a trap door.
Ladder that leans against a wall, comprised of two parallel side rails joined by rungs.
Straight ladder of adjustable height, made up of two superimposed planes that slide one on the other.
Part attached to the bottom end of the side rail to prevent slipping.
Rope that is pulled to raise and lower the upper part of the ladder.
Hook immobilizing the upper part of the ladder at the desired height by hooking onto a rung; it can also be released to lower the upper part.
Small wheel for maneuvering the hoisting cord.
Part supporting rungs or steps.
Bar on a ladder that constitutes a step.