{HEAD ~ Micro gyroscope} for determining {TAIL ~ rotational movements} about three spatial axes which are perpendicular to one another 
for determining
{ HEAD ~ Micro gyroscope } for determining { TAIL ~ rotational movements } about three spatial axes which are perpendicular to one another
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH