The carriage will move relative to {TAIL ~ a scale} provided on the frame, such movement being commensurate with the amount of {HEAD ~ deflection} of the elongated flexible member caused by the known spring force 
The carriage will move relative to { TAIL ~ a scale } provided on the frame , such movement being commensurate with the amount of { HEAD ~ deflection } of the elongated flexible member caused by the known spring force
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH