iGrav® Superconducting Gravimeter and remote field enclosures: Zero Drift*, no Liquid Helium requirements ever! Stable Calibration factor, low noise approaching NLNM, broad frequency response and self-leveling. Real time Gravity. iGrav®s are in use in any environment worldwide from Deserts, Jungles, Volcanoes, Mountains, Arctic, to International Standards laboratories. (*<6 microgal/year reported)