This will make a pdf image of the dial similar to what you want. You can print it any size you want. Since the gnomon is printed to it will be sized correctly.
If you make two dials with s curves instead of 8 curves they are much easier to read.
You need to enter your position in latitude and longitude.
If you need to convert the format of your position this page will help:http://www.gpsvisualizer.com/calculators#airports