The Sticker gives you a graphic of the bit you are using on the Router Plate. Against it, you set up a picture of your workpiece on the Guide Rail.
As the real bit moves across the real workpiece, so the Flightpath Sticker slides past the picture of the workpiece on the Rail, so that you know exactly where your cut will come.
The graphic will also give you the centre line of your workpiece when you need it.
Now supplied with WR900.