The gripping knob is connected to {HEAD ~ an intermediate non deformable connecting device} having structure to allow adjustment of {TAIL ~ the length} thereof 
The gripping knob is connected to { HEAD ~ an intermediate non deformable connecting device } having structure to allow adjustment of { TAIL ~ the length } thereof
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH