POCKET PAL

scientific and electrical apparatus and instruments, namely, meters, testers, data loggers; measuring, data logging and display, testing, signalling, checking (supervision) and teaching apparatus and instruments, namely, visual displays of measurements of conductivity, acidity and oxygen reduction potential; meters, namely, hand held pH testers, conductivity meters and hand held oxygen reduction potential meters; testing meters, namely, for soil and liquid acidity and conductivity and for display and data logging of test valves