An input device includes a supporting unit which is provided with first shafts, and {HEAD ~ a rotating unit} is connected to {TAIL ~ the first shafts} in a rotatable manner 
is connected to
An input device includes a supporting unit which is provided with first shafts , and { HEAD ~ a rotating unit } is connected to { TAIL ~ the first shafts } in a rotatable manner
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH