a second lever section including {TAIL ~ a cylindrical body} using the rotation axis as its rotation center, and a second lever having a base connected to the cylindrical body, a portion of {HEAD ~ the base} slidably superimposed on an upper part of the first lever section, and a turning radius, a front end of which is larger than the turning radius of the first lever; and 
a second lever section including { TAIL ~ a cylindrical body } using the rotation axis as its rotation center , and a second lever having a base connected to the cylindrical body , a portion of { HEAD ~ the base } slidably superimposed on an upper part of the first lever section , and a turning radius , a front end of which is larger than the turning radius of the first lever ; and
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 OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD 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