... topic: 2997 On not taking 25" maps too literally posted: 4 Mar 2017 21:51 from: Martin Wynne To illustrate the perils of taking 25" maps too literally when overlaying templates, here is a 4-way treble turnout at Pemberton, near Wigan. As can be seen, all 3 switches are beyond the platform ramp. (The columns on the right are supporting the footbridge). 2_041637_280000000.jpg And this is what the OS surveyor made of it when he got back to the drawing board: 2_041638_560000000.png It does show that 25" maps are really too small for detailed track planning. Unfortunately in most cases they are all we have -- and much better than nothing of course. regards, Martin. posted: 5 Mar 2017 07:26 from: Jim Guthrie Martin, What are the rails on the outside of the running rails in the bottom left corner? Jim. posted: 5 Mar 2017 07:41 from: Martin Wynne Jim Guthrie wrote: What are the rails on the outside of the running rails in ...