In manufacturing the positioning spring by etching, for example, in the embodiment, if {HEAD ~ the narrowed portions} to be filled in {TAIL ~ the U shaped grooves} of the slider are transferred on the film used in the etching with the necessary accuracy, the positioning spring finished up has the narrowed portions with the precision 
to be filled in
In manufacturing the positioning spring by etching , for example , in the embodiment , if { HEAD ~ the narrowed portions } to be filled in { TAIL ~ the U shaped grooves } of the slider are transferred on the film used in the etching with the necessary accuracy , the positioning spring finished up has the narrowed portions with the precision
OTH 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 REL TAIL 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