When the upper and lower housings are in the collapsed position, {HEAD ~ the mirror} is pivotally supported within {TAIL ~ the second housing} about a mirror pivot axis disposed at an oblique angle relative to the optical axis of the lens and in a plane generally parallel with that of the cameras focal plane 
When the upper and lower housings are in the collapsed position , { HEAD ~ the mirror } is pivotally supported within { TAIL ~ the second housing } about a mirror pivot axis disposed at an oblique angle relative to the optical axis of the lens and in a plane generally parallel with that of the cameras focal plane
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH