Ali, you may want to try this protractor generator from Conrad Hoffman: http://www.conradhoffman.com/chsw.htm
Works under Windows, all you need is your pivot to spindle distance and selection of groove radius, as you have a Jelco the recommendation is to use DIN and probably LofgrenA but I doubt there's a huge amount of difference between that and Stevenson / IEC
VinylEngine thread where I found it: http://www.vinylengine.com/turntable...p?f=19&t=16849
Ah! no external linking, this is the thread title: My new alignment template generator