In its operating position, {HEAD ~ the head} is turned at {TAIL ~ an angle} of 90° to the shaft, whereby the pulleys lie in the same plane 
is turned at
In its operating position , { HEAD ~ the head } is turned at { TAIL ~ an angle } of 90 ° to the shaft , whereby the pulleys lie in the same plane
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH