SCIENTIFIC, ELECTRICAL, ELECTRONIC, AND VIDEO APPARATUS AND INSTRUMENTS FOR PERFORMING DATA ACQUISITION, ESPECIALLY IN INDUSTRY, SCHOOLS, AND OTHER EDUCATIONAL INSTITUTIONS, NAMELY ACCELEROMETERS, BAROMETER PROBES, CONDUCTIVITY PROBES, CURRENT PROBES, FORCE PROBES, HUMIDITY PROBES, MAGNETIC FIELD PROBES, O2 GAS PROBES, TEMPERATURE PROBES, LIGHT PROBES, PH PROBES, CO2 GAS SENSOR PROBES, COLORIMETERS, MICROPHONES, SOUND LEVEL PROBES, ION SELECTIVE ELECTRODE PROBES, VOLTAGE LEADS, OXYGEN PROBES, DISSOLVED OXYGEN PROBES, ROTARY MOTION PROBES, TURBIDITY SENSORS, DISTANCE PROBES UTILIZING SONAR TECHNOLOGY, PRESSURE PROBES, LASER SOURCE FOR USE WITH THE PHOTO EVENT PROBES OR STAND-ALONE APPLICATIONS, BOOSTERS (SIGNAL CONDITIONERS USED IN CONJUNCTION WITH PROBES AND SENSORS), AND CABLES, PROBE ADAPTERS, MOUNTING APPARATUS, MODULAR CONNECTORS, POWER SUPPLIES, BATTERY POWER PACKS, INSTRUMENT AND PROBE CASES, DATA ACQUISITION SYSTEM CONSISTING OF PROBE INPUTS ANALOG TO DIGITAL DATA CONVERTERS DIGITAL INPUT/OUTPUT AND COMPUTER CONNECTIVITY, ALL FOR USE THEREWITH IN CONJUNCTION WITH PERSONAL COMPUTERS, HANDHELD COMPUTERS OR OTHER RELATED DEVICES TO DISPLAY AND ANALYZE THE DATA GATHERED USING THE INCLUDED SENSORS AND PROBES; COMPUTER PROGRAMS, NAMELY OPERATING SYSTEM, APPLICATION AND UTILITY PROGRAMS FOR USE WITH ELECTRONIC TEST AND MEASUREMENT RELATING TO DATA ACQUISITION AND ANALYSIS IN INTERNATIONAL CLASS 9.