Global Positioning System (GPS) apparatus for use in the field of diving for maintaining course and positioning underwater; sound transmitting and reproduction apparatuses for underwater use in the field of scuba diving; intercommunication apparatus for underwater use for divers; hydrometers; marine depth finders; measurers, namely, pressure measuring apparatus for divers; pressure indicators for divers; temperature indicators for divers; computer interface programs for use in connection with...

Scientific, weighing, measuring, checking, and supervision apparatus and instruments, namely apparatus and instruments for measuring levels of minerals, mud, suspended solids, settling zones, and clarity of overflow, in processing minerals and ore; scientific, weighing, measuring, checking, and supervision apparatus and instruments, namely, apparatus and instruments for profiling levels of minerals, mud, suspended solids, settling zones, and clarity of overflow, in tanks used in processing mi...