navigation, motion & heave sensing ellipse inertial sensors provide outstanding orientation and position data in a small, light-weight, and rugged enclosure. incredibly versatile, you can connect your own gps or use the internal one, connect an odometer, receive differential gps corrections, etc. a little larger, the amazing ellipse-d completes this state-ofthe- art product line. it integrates a survey-grade l1/l2 gnss receiver with two antennas for unmatched heading and position accuracy. extreme flexibility for high demanding applications