risms indicating record distances and qualification in throwing events. Each item is made up of two prisms, to place one on each side of the trowing sector.
Each indicator is made up of a triangular prism-shaped casing made of polyethylene (PE), and metal plates fixed to the casing by means of four magnets each.
The casing is made by rotational moulding in polyethylene, with a textured exterior finish. This material has protection against ultraviolet (UV) rays and is unalterable by atmospheric agents.
The sheets are made of steel, and are subjected to a powder painting treatment.