[Class : 9] Scientific, Nautical, Surveying, Optical, Weighting, Measuring, Signalloing, Checking (Supervision), Life Saving Safely And Data Transmission Apparatus And Instruments For Measuring, Checking, Verifying, Protecting, Saving, Regulating, And Monitoring Physical Properties, Such As Displacements, Pressures, Forces, Temperatures, Viberations, Torsinal Moments, Speed, Fluid Level, Oil Quality, Ice Or Frost Formatin, In Industrial Processes, In Manufactruing Installations, In Energy Production Installations, In Buidings, In Machines And Rotating Machines (In Particular Gas Turbines Steam Trubines, Hydro Turbines) And Machine Tools As Well As In Vehicles And Locomotion Devices On Land, In The Air, In The Water Or In Space, Accelerometers, Including Piezoelectric Accelerometers, Static And Dynamic Pressure Sensors, Vibration Velocity Sensors, Velcimeters, Air Gap Sensors, Ice Or Frost Sensors, Proximity Sensors For Relative Vibrations, For Relative Displacements And For Differential Dialation, Sensors For Measuring Eccentricity.