Oz,
I can't find my old Blue books since she who must be obeyed tried to clean up my study, so I need a procedure designer's help:
Noting that there are some differences in ILS installations, what sort of vertical distance from the glide path would one expect to see at half scale deflection up and down at say 4 miles from touch down (about where OMs are sited, depending on terrain etc) and 10 miles (about the start of the procedure)?