Skip to content
Model Rail Calc
Menu

15 pages

Turnout Geometry by Number and Scale

Frog angle, divergence, ladder reach and crossover length for every common turnout number in N, HO and O, and what each number is genuinely suited to.

Every page here is computed rather than written, so the figures match the calculator that produced them exactly. Where a figure is a hobby rule of thumb rather than a published NMRA standard, the page says so. Every table is plain HTML you can quote.

Last updated

Most recommended across these pages

Turnout geometry in N

Turnout geometry in HO

Turnout geometry in O