... a guess on the original. gimp9.png With the timbering added. For this size there are 32 timbers between the blade tips and the crossing vee. Which matches well my best attempt to count them in the original (I make it 33 timbers -- anyone?). gimp10.png gimp11.png A couple of close-up views. Either this turnout is wide to gauge through the turnout road, or I didn't get the Gimp correction grid quite right. You can spend days doing trial and error gimping if you are not careful. gimp12.png The more usual Templot view of this turnout. For a 12ft switch you can use B-size blades, which have the same 1:32 planing angle. gimp13.png This is an alternative solution matching a 15ft switch and 1:11 crossing angle. Here the timber count is 38 -- rather more than I can see in the original. On the other hand this is modern timber spacing, and pre-grouping designs tended to use fewer timbers on wider spacings. To build a 15ft switch you can use C ...