ATP-3-09-02 Field Artillery Survey Download
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16 February 2016 ATP 3-09.02 5-1 Chapter 5 Angle Determination An FA survey operation consists of many tasks. One task is to measure horizontal and vertical angles. FA surveyors use the NIKON NE-102, 0.02/0.05 mil Theodolite to accomplish this task. NIKON NE-102 - LOCATION AND DESCRIPTION OF CONTROLS 5-1. . The instrument used by FA Surveyors for angle measurements is the 0.05/0.02 mil Theodolite. This instrument is used for measuring horizontal and vertical angles for fourth-order, and fifth-order survey operations. For a description and location of controls see figures 5-1 and 5-2 (on pages 5-2 and 5-3). Carrying Handle – used to lift and replace theodolite from and back into carrying case. Display and Keyboard – Do Not use organic solvents (such as paint thinner or ether) to clean the non-metallic parts such as the keyboards, and the painted or printed surfaces. Solvents will discolor the surfaces or remove printed characters. Clean only with a soft cloth or tissue slightly moistened with water or a mild detergent. Power Switch – Turns display on and off. Optical Plumb – The optical plumb image is erect with a 3X magnification power. The field of view is 5°, with a focusing range of 0.5m to infinity. Tribrach Leveling Screws – Used for precise vertical alignment of the instrument’s vertical axis. Optical Sights – Used to “rough” sight instrument on target. Optical sights are located on the top and bottom of the telescope. Objective Lens – Lens image is erect. Magnification is 30X, with a field of view of 2.3m at 100m. The minimum focusing distance is 0.7m. Circular Level – Used to “rough” level the instrument. Level sensitivity for the Circular Level is 2mm. Tribach Leveling Screws – Used for precise vertical alignment of the instrument’s vertical axis.