[17/11/2015 Bit more progress]

Hi merlin46. Thanks for the interest. I've only got 16' for the scenic part of the layout. This will include a bend at each end. So at a rough guess, I'd say it will measure about 10' in length. I'm not sure how long it would be in 4mm scale but I'm guessing about 19 or 20ft?

[17/11/2015]

Thanks for the words of wisdom steve22.