Bob Beacham This is probably the most common of the ladder types, and there can’t be many homes that don’t own one. Step ladders are a general-purpose folding model that are compact enough to ...

There are also fixed ladders that are used on the sides of boats or on some Lorries. John H_ Basely of Dayton invented the step ladder in 1862. When he made it he put hinges on it so when someone ...