Apparatus comprised of electronic and software components for monitoring the dynamic air gap in hydro-electric generators, as well as other large rotating machines and also for monitoring the height, alignment and lateral position of linear motors and the vehicles propelled by same; Apparatus comprised of electronic and software components for the monitoring of any data relating to the performance of large generators and other rotating machines without requiring the stoppage of same; Measuring and monitoring instruments suited for the harsh environment inside turbo generating machines that monitor true vibration without electrical run out and other interference, measures end-winding vibration to assess bracing condition, or for any application in high voltage or explosive environments; electronic monitors for on-line stator bar vibration to determine wedge tightness and winding insulation condition; Measuring instruments to determine the magnetic flux emanating from rotor poles of generators to detect and diagnose any magnetic field imbalances; Alarms for the detection of any excessive value from the monitored parameters; Alarm inhibitor for use during machine transitory operating condition to prevent false alarms and unnecessary shutdowns; Detectors for rotor movement in order to display rotational speed, to notify when it reaches standstill during shutdown and to warn of undesired movement during maintenance; Measuring instruments for axial displacement of turbo generator shaft; Measuring instrumentation and apparatus for miscellaneous applications of capacitive technology to measure displacement, proximity, position, or air gap in rotating machine that can show magnetic disturbances when the vibration is monitored using magnetic base sensors such as Eddy current probes; Measuring and monitoring systems for hydroelectric turbine-generator sets, namely, electronic monitors to measure the true vibration without electrical run out and other interference; electronic monitors of on-line stator bar vibration to determine wedge tightness and winding insulation condition; Measuring instruments for end-winding vibration to assess bracing condition, or for any application in high voltage or explosive environments; Measuring instruments for magnetic flux emanating from rotor poles of generators to detect and diagnose any magnetic field imbalances; Electronic products for the generation of thermal maps of stator core, stator windings and rotor poles of a generator of electricity or motor; Alarms for detecting a breakage and identifying the defective shear pin in the wicket gate operating mechanism of hydro generators; Detectors for rotor movement in order to display rotational speed, to notify when it reaches standstill during shutdown, and to warn of undesired movement during maintenance on the machines; Measuring instruments for testing the static tightness of every stator wedge with a robot tool in large electrical generators or motors