The invention describes a multilayer Printed Circuit Board (PCB) for measuring current density distribution in a fuel cell. The Technology  The multilayer PCB includes a first layer with a plurality of segments of a current collector.  The current collector is etched on a front side of the first layer to collect a current from a first bipolar plate of the fuel cell,  Wherein each segment is extended to a rear side of the first layer.  Further, the multilayer PCB includes a second layer with a plurality of resistive loops etched on a front side of the second layer and extended from the front side to a rear side of the second layer,  wherein each the resistive loop receives the current from the rear side of the first layer.  Furthermore, the multilayer PCB includes a third layer with a common plate etched on a rear side of the third layer.  The common plate receives the current from each resistive loop through extensions of common plate on a front side of the third layer,  Finally the common plate releases the current to a second bipolar plate of the fuel cell.