  We present preliminary results from measuring Galactic orientation angles of
800 elliptical and bipolar Planetary Nebulae (PNe) in the Hong Kong/Australian
Astronomical Observatory/Strasbourg Observatory H-alpha Planetary Nebula (HASH)
research platform and database (Parker et al. [1], [2]). For elliptical PNe the
distribution of orientation angles is found to be essentially uniform. However,
for bipolar PNe there is statistically significant evidence for preferred
orientation angles (as tentatively reported before with smaller samples) across
the whole Galaxy.
