Apart from the rotary adjustment about the axis of rotation, {HEAD ~ a switching function} can be provided by moving {TAIL ~ the rotary button} in a direction parallel relative to the axis of rotation 
provided by moving
Apart from the rotary adjustment about the axis of rotation , { HEAD ~ a switching function } can be provided by moving { TAIL ~ the rotary button } in a direction parallel relative to the axis of rotation
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH