Profile: Geo Sensors is a manufacturer of resistivity meters and water level indicators. Resistivity meter with built-in power source is designed to measure current and potential separately in one mode of measurement, while in the other mode it can read the resistance directly that results in reducing the users time for calculating resistance from current & potential values. Our range can send highly stabilized currents up-to 200mA and read the resulting potential with a 100 micro volts resolution or ground resistance directly with 50 micro ohms resolution. Magnetometers are portable field geophysical instrument that provide accurate measurements of the total intensity of earth's magnetic field. Working on the principle of nuclear magnetic induction, the magnetometer yields absolute values of magnetic field and is almost free from the temperature & orientation problems.