A polymeric measuring plate of a weighing platform comprising measurement systems is characterized in that the measuring plate is made in its entire volume of a polymeric thermoplastic material or polymeric duroplastic material, thermosetting or chemically curing, the shape of the plate is limited by a substantially flat active surface (1a) and a spatially shaped passive surface (1b), and the measuring systems are located in areas of highest stress and are in the form of optoelectronic measuring systems (7) or beam measuring systems (11). A method of manufacturing a polymeric measuring plate of a weighing platform, which plate is defined by claims 1 to 3, is characterized in that the shape of the passive surface (1b) of the polymeric measuring plate (1) and arrangement of measuring systems (7) or (11) is selected by means of computer software for specific working conditions of the weighing platform, and subsequently a polymeric measuring plate (1) is shaped by a method that is suitable for the polymer material used.