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