The device comprises a translating bracket with {HEAD ~ a cylinder} and a fixed bracket with {TAIL ~ a chamber} 
The device comprises a translating bracket with { HEAD ~ a cylinder } and a fixed bracket with { TAIL ~ a chamber }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL