12.07.2015 Views

SUBCOURSE EDITION - Modern Prepper

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Step 3: Plot the easting value of the control point by plotting the measurement from the easting gridline along the two northing grid lines bordering the grid square (fig 6-4). If you have dividers, swing anarc 1.714 centimeters east of grid line 287 from the two grid intersections shown in figure 6-4.Remember that the eastings are plotted to the right just the same as reading a map.Figure 6-4. Swinging arcs from grid line 87 (1.714).Step 4: Connect the two arcs with a very light construction line (fig 6-5). Use a very sharp penciland be very careful that the line is drawn accurately. The control point lies somewhere upon this line.114Figure 6-5. Connecting arcs.

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