Well, congratulations on your success! But I think it may be important to recognize that for this particular discussion one would have to recognize whether the discussion was designed around the "maximum safe deviation" or the "maximum deviation acceptable for check ride purposes." Typically, the answer that dv8 provided, "All except precision approach ± 5°, and Precision approach half scale deflection azmuth and glidepath," is what most regulatory authorities accept as satisfactory for checking purposes. However, that doesn't necessarily mean that during a precison approach getting to a 1/2 scale deflection plus an indicator width or two or three would put you in an area that was unsafe. As far as I know, the only time you would be "unsafe" would be when either of the indicators (azimuth or glidepath) was at their maximum deflection - as you wouldn't be able to tell whether or not you had exceeded that actual distance from the center; or, if beyond, how far beyond. THAT would definitely show that you were at, or no longer within, the three precision approach path obstacle clearances ... left or right for azimuth or low for glidepath.