Young Brunette Girl Posing With A Stool In The Blue Bathroom

Later developments in the 17th century produced the joined stool, using the developing techniques of joinery to produce a larger box-like stool from the minimum of timber, by joining long thin spindles and rails together at right angles.
Backstools
The backstool represents an intermediate step between the development of the stool and the chair. A simple three-legged turned stool would have its rear leg extended upwards and a crossways pad attached. Backstools were always three-legged, with a central rear leg.