A location pad includes multiple field-generators, aframe and a mounting fixture. The multiple field-generatorsare configured to generate respective magneticfields in a region-of-interest of a patient body, formeasuring a position of a medical instrument in theregion-of-interest. The frame is configured to fix themultiple field-generators at respective positionssurrounding the region-of-interest. The mounting fixtureis configured to position the frame above the patientbody.
