a first lever section including {HEAD ~ a cylindrical body} using {TAIL ~ the rotation axis} as its rotation center, and a first lever having a turning radius projected from the cylindrical body 
using
a first lever section including { HEAD ~ a cylindrical body } using { TAIL ~ the rotation axis } as its rotation center , and a first lever having a turning radius projected from the cylindrical body
OTH OTH OTH OTH OTH HEAD 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