Load sensors 11 {HEAD ~ each} constituted of {TAIL ~ a plate member} 14 and distortion gauges 15˜18 detect the extent of flexure of at least two of the supporting portions 
constituted of
Load sensors 11 { HEAD ~ each } constituted of { TAIL ~ a plate member } 14 and distortion gauges 15˜18 detect the extent of flexure of at least two of the supporting portions
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL 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