HORWATER

Micrometer gauges; level gauges; depth gauges; computer-controlled apparatus for measuring radio frequency signals, concentrations of gas and liquids, and audio signals; pressure indicators; temperature indicators; barometers; scientific measuring instruments, namely, conductivity meters; electrical energy utilization metering devices; water testing instrumentation for detecting contamination degree; surveying machines and instruments for testing the pollution level of water, namely, water testing instrumentations for monitoring and detecting contamination