... Surface Receiver. After amplification, de-noising and digital data acquisition, the data can be recovered, displayed and recorded by the computer ... suitable for electromagnetic wave transferring. Parameters Measured: Well deviation, azimuth, tool face, temperature, GR, resistivity, annular pressure, etc. Technical Specifications ... 0~180° ±0.2° Azimuth 0~360° ±1.5° Tool face 0~360° ±1.5° GR 0~500API ±7% ...