The accelerometer is shaped as a torus with {HEAD ~ the center hole} providing {TAIL ~ center hole bolt mounting} 
providing
The accelerometer is shaped as a torus with { HEAD ~ the center hole } providing { TAIL ~ center hole bolt mounting }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL