ATP-3-09-30 Observed Fires Download
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Chapter 3 3-6 ATP 3-09.30 28 September 2017 Figure 3-3. Angle T Reticle Patterns 3-32. Figure 3-4 shows the horizontal and vertical scales of the M22 or M24 binocular reticle pattern divided into increments of 10 mils with shorter hash marks at 5 mil increments. Use the vertical scale in height of burst (HOB) adjustment. The scale cannot be used to determine vertical angle. Only a leveled measuring device can accurately measure vertical angle. Figure 3-4. M22 and M24 binocular reticle pattern Hand Measurment of Angular Deviation 3-33. When all other means to measure angular deviation are not available, the observer may use the hand and fingers as a measuring device. Figure 3-5 (on page 3-7) shows approximate numbers for an average hand.