The carriage 31 can move freely and {HEAD ~ the meshing} between {TAIL ~ the worm screw} and the tooth wheel is vibration free thanks to the concomitant resistances due to the friction of the spring 171 on the axis 169 and the friction of the tab 173 on the sector 181 
between
The carriage 31 can move freely and { HEAD ~ the meshing } between { TAIL ~ the worm screw } and the tooth wheel is vibration free thanks to the concomitant resistances due to the friction of the spring 171 on the axis 169 and the friction of the tab 173 on the sector 181
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH