FMS RMGZ925.535.120 Tension Force Measuring Print Press Roller 120mm x 535mm

In Good Used Condition.  Removed from a Working Environment.
These were used in a print press facility.  
 RMGZ925 Force measure tension sensor.
Single side mounting.
Roller size: 120mm OD x 535mm length.
Overall length: 580mm
Mounting thread: M20
Not sure what material the roller is, non-magnetic.