ATP-3-09-02 Field Artillery Survey Download
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Angle Determination 16 February 2016 ATP 3-09.02 5-13 5-26. While ensuring the telescope is in the direct mode with the eyepiece on the left side achieve autoreflection on the porro prism of the IPADS (see figure 5-19).The IPADS is the rear station. Record the initial setting of 0001.0 in the Recorder’s Notebook under the Horizontal Angle column, in the IPADS D direct row. Figure 5-19. Autoreflection rear station 5-27. Press Hold to release the scale and rotate the instrument in a clockwise direction and sight in on the lowest visible point of the forward station. Read the Horizontal Angle and record in the Recorder’s Notebook in the Horizontal Angle column of the Forward Station D row (see figure 5-20). Figure 5-20. Forward station direct horizontal angle reading