Apparatus and instruments for mapping, namely, [electronic sensors and receivers as basis for mapping through satellite measuring and satellite photographing; apparatus and instruments for nautical mapping, namely,] sonar equipment, echo sounding devices, [magnetic measuring equipment for nautical mapping, namely, magnetic gyrocompasses;] apparatus, instruments, systems and equipment for electronic positioning, namely, electronic navigation instruments, namely, [Global Positioning Systems (GP...

computer based system comprised of computer hardware and software for measuring the quality of service delivered by internetwork service providers