SCIENTIFIC, [ WEIGHING, ] MEASURING, SIGNALLING, FLUID LEVEL CHECKING AND LEVEL ADJUSTING, INSTRUMENTS AND UTENSILS, NAMELY, FILLING POINT MEASURING INSTRUMENTS; FLUID LEVEL MEASURING INSTRUMENTS; ELECTRIC AND ELECTRONIC CONTROLLERS FOR USE IN MEASURING AND INDICATING SPEED; ELECTRIC AND ELECTRONIC CONTROLLERS FOR MONITORING IDLE CONDITIONS; ELECTRIC AND ELECTRONIC CONTROLLERS FOR MONITORING ROTATION DIRECTION; ELECTRIC AND ELECTRONIC CONTROLLERS FOR USE IN INDICATING FILLING POINTS; ELECTRIC AND ELECTRONIC CONTROLLERS FOR USE IN MONITORING LIMIT VALUES; ELECTRIC AND ELECTRONIC PHASE CONTROL MODULATORS; ELECTRIC AND ELECTRONIC RELAYS FOR PHASE EQUILIZATION AND TIME-DELAY; FLUID LEVEL TRANSMITTER-CONVERTERS, ULTRASONIC FLUID LEVEL TRANSMITTER-CONVERTERS; BY-PASS FLUID LEVEL TRANSMITTER-INDICATORS; FLUID LEVEL SENSORS AND ELECTRODES, DIGITAL AND ANALOGUE INDICATORS; FLOW TRANSMITTER-DETECTORS; CURRENT MONITORING TRANSMITTERS; ELECTRIC AND ELECTRONIC SWITCHES, NAMELY, MAGNETIC SWITCHES IN THE FORM OF FLOAT SWITCHES, INDUCTIVE AND CAPACITATIVE ELECTRIC AND ELECTRONIC SWITCHES AND ELECTRIC AND ELECTRONIC SWITCHES COMPRISING FLOAT SWITCHES, OPERATING CONTROLLERS, AND METAL INDICATORS; [ COMPUTER APPLICATION SOFTWARE FOR USE WITH OPERATING AND MANAGING ELECTRONIC CONTINUOUS FLUID LEVEL CONTROLS AND SENSORS; DOWNLOADABLE ELECTRONIC PUBLICATIONS IN THE NATURE OF INSTRUCTIONAL AND OPERATING MANUALS FOR USE WITH ELECTRONIC CONTINUOUS FLUID LEVEL CONTROLS AND SENSORS; DOWNLOADABLE ELECTRONIC PUBLICATIONS IN THE NATURE OF CATALOGS IN THE FIELD OF ELECTRONIC CONTINUOUS FLUID LEVEL CONTROLS AND SENSORS ]