An IC socket mounted on a test board while in use and having {HEAD ~ a semiconductor device} with {TAIL ~ projection electrodes} mounted on said IC socket for testing, comprising: 
An IC socket mounted on a test board while in use and having { HEAD ~ a semiconductor device } with { TAIL ~ projection electrodes } mounted on said IC socket for testing , comprising :
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH