... . In the UK it is not 1/2". For traditional UK bullhead track on non-GWR lines it is 3/4 ", which is the Templot default. This is the very first change you need to make, because it affects other things including the layout of the timbering: 2_071311_170000001.png The "theoretical point" is called the fine point (FP) or intersection: 2_160721_340000000.png The "point of switch" is called the toe. The lead lengths from the toe are shown in the information panel: 2_071311_170000000.png You need to scroll the information panel to see these. The dimensions are in model mm and will change as you adjust the turnout. You can't set them directly. Clearly the difference between these two leads, the distance from FP to blunt nose, called "One Half of Frog Number in Inches" on your drawing becomes "Three Quarters of Frog Number in Inches" when the blunt nose is 3/4" wide. More next time. regards, Martin. posted: 7 Oct 2012 20:27 from ...