nsWare PCB Stacking Stripe
The program generates a PCB Stacking stripe symbol which will ensure better PCB quality. The symbol consists of 2 copper areas on each layer. Place the PCB Stacking stripe so that it straddles the edge of the PCB where it is cut from the panel. The result is that a quick inspection of the manufactured PCB will determine if the layers are produced in the correct order since a stair stepping pattern can be seen.