I'm just putting together a signal box design in SSI
1) What is an Adv. Starter for? does it copy another starter or is it operated independently?
2) What are the spring points on the diagram I found it the GWR Historical Layouts book? They look like catch points but they are labelled, whereas the other catch points on the diagram are not.
And also a request,
If anyone has any photos/diagrams/etc of Norton Fitzwarren junction but particularly information relating to the signal box both physically and operationally, I would be happy to pay for any postage or even better if it is on the web or in books that I could get from the library. The diagram I have is abridged and only contains a few signal numbers and does not number the points. I would like to label them correctly both for accuracy and also to help me with my SSI layout.
Thanks
Luke Briner