BM539 semi-automatic bridge

This instrument was designed for manufacturers of electric components (resistors, capacitors and inductors). The operator would adjust the desired value by the four knobs and also the desired accuracy. After connecting the new electric component, the device would show whether the real value is higher, lower or equal to the desired value. Also, the exact deviation from the desired value would be measured. The device could be connected to an automatic sorter. The sorter would automatically separate a pile of components into three boxes, according to their value being smaller, larger or equal to the desired value.