9 SCIENTIFIC, SURVEYING, MEASURING AND SIGNALING APPARATUS AND INSTRUMENTS, NAMELY SENSORS FOR MEASUREMENT OF PHYSICAL CHARACTERISTICS TO BE USED IN THE FIELD OF OIL AND GAS EXPLORATION AND PRODUCTION, AND APPARATUS, NAMELY TRANSMITTERS, FOR TRANSMISSION OF RESULTING INFORMATION TO BE USED IN THE FIELD OF OIL AND GAS EXPLORATION AND PRODUCTION, AND COMPUTER SOFTWARE FOR CONTROLLING THE APPARATUS AND INSTRUMENTS AND FOR COLLECTING, ANALYZING AND TRANSMITTING DATA AND OTHER INFORMATION FOR USE