Construction set

A construction set comprising a plurality of elements mutually co-operable to produce at least one assembly, wherein the elements comprise:

• a plurality of connectors each comprising a substantially cylindrical body having a cylindrical surface, a cylinder axis, and a hollow base defining an interior, the cylindrical surface being provided with a radially extending cylindrical projection and the base with at least one groove and the projection and the groove being shaped to permit assembly of two such connectors in mutually orthogonal relationship by engagement of the projection of one of those connectors in the at least one groove of the other one of those connectors, and
• a plurality of locking members of part-annular form curved substantially in conformity with the cylindrical surface of the body of each connector,
• the body of each connector being provided with at least one opening extending perpendicularly to the cylinder axis of that body to communicate with the interior of the base and each locking member being provided at a concave side thereof with a projecting locking nose insertable through the at least one opening of each connector to protrude into the interior of the base for axial retention of another element of the set assembled in a selectable one of an axial relationship and an orthogonal relationship with the respective connector.