The first fixing arrangement includes, in particular, {TAIL ~ a first screw} 61 and a first threaded grub screw 62 that engage in respective threaded holes 43, 44 of {HEAD ~ the main body} 41 
The first fixing arrangement includes , in particular , { TAIL ~ a first screw } 61 and a first threaded grub screw 62 that engage in respective threaded holes 43 , 44 of { HEAD ~ the main body } 41
OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH