The BPP is a scale that has been designed for the continuous weighing of raw boards. This weighing system is composed of load cells, of a suitable load, to support the conveyor unit. An IMAL electronic digital amplifier supplies the voltage, appropriately filtered and adjusted, to the cells, and amplifies the proportional weight signal. This value can then be transmitted to other quality control systems, like the thickness gauge, so that density may be calculated. The integrated display and keyboard are used to programme the software processing parameters, especially with regard to the tare and full scale values.