What scale was that diagram created for?
That looks like something by Rene Gourley, for a Proto:87 turnout.
See
http://www.proto87.com/n-scale-track.html, Andy R. has CNC machined point rails available in every rail code from 40 to 83, that should work in every scale. The nice thing is, you don't need to file away any portion of the stock rails in order for the points to nest up correctly.
I haven't tried them in N scale, but Andy also has photo-etched frogs for N scale in Code 40 and 55. So you can build a complete turnout without having to file any rail. (These are straight frogs, curved frogs you still get to make yourself
)
Ed