Interlocking display panel for teaching

摘要

The panel has a tongue (3) and a mortice (4) on opposite sides each formed by five arcs of a circle (6) connected at their ends by two right angle portions (5). the tongue and mortice have a smaller width than the base and a thickness greater towards the top (9) which prevents all horizontal spacing. The support can receive engravings, letters (2) signs, glued patterns or paint. Each support can have straight sides and can have two mortices and tenons.