1. eTraxx

    Nominal Pipe Sizes – scaled Prototype to O, S, HO, N, Z

    This may prove useful .. you can either .. 1 - look down the left column and find the NPS (Nominal Pipe Size) .. the follow the row to the right under your scale and find the size wire/tubing to represent that pipe. 2 - Follow the column for your scale down to the size that matches the...