... of the REA turnout sizes is on the Templot "Making a Start" page at: http://www.templot.com/martweb/gs_firstoff.htm (I've just noticed that page has two sections, labelled 1 and 3. How long has it been like that? Nobody said a word. I do seriously wonder sometimes if anyone ever reads all that stuff?) Yes, all V-crossings (frogs) of the same unit angle are the same angle where the rails intersect at the "fine point" (FP): 2_130719_380000000.png In the case of regular and generic V-crossing types the rails then continue at that angle through the vee rails and beyond. Even if the turnout is inserted in curved track, the relative displacement of the vee rails remains the same, i.e. the radius in both vee rails is the same. However, in the case of a curviform type of V-crossing, the angle applies only at the FP, and the rails of the diverging road beyond there continue to curve away from the main road at the ...