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How to use the Plotting Board

 
  
 
HOW
TO
USE
THE
PLOTTING
BOARD
The plotting board is used to plot the positions of the mortars, observation points, and targets
so you can determine the directions and distances between these points.
NOTE
Use the center (pivot point) of the plotting board as either the weapon position
o r the observation point.
To plot a point with a given azimuth and distance from another, proceed as follows:
1 . Use the pivot point as one point.
2. Rotate the azimuth disk (1) on base grid (2) until the stated azimuth is indicated over the
index mark (3).
3. Using the range scale (4) measure the stated distance from the pivot point toward the top
of the plotting board and place a dot.
NOTE
In plotting, read right for azimuth and left for deflection.

   


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