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