The movement of the stem in the axial direction is detected by a first switch means, and the rotation of the stem at the second and third positions is detected by a second switch means, whereby any one of {HEAD ~ the four display items} is corrected depending upon {TAIL ~ the state} of the two switch means 
is corrected depending upon
The movement of the stem in the axial direction is detected by a first switch means , and the rotation of the stem at the second and third positions is detected by a second switch means , whereby any one of { HEAD ~ the four display items } is corrected depending upon { TAIL ~ the state } of the two switch means
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 OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH