a substrate on which several tangentially oscillating masses are arranged about the z axis that is perpendicularly positioned on {HEAD ~ the substrate}, the oscillating masses are fastened to {TAIL ~ the substrate} with springs and tie bolts 
a substrate on which several tangentially oscillating masses are arranged about the z axis that is perpendicularly positioned on { HEAD ~ the substrate } , the oscillating masses are fastened to { TAIL ~ the substrate } with springs and tie bolts
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 TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH