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