SUBCOURSE EDITION - Modern Prepper

Step 10: Construct the four corners of the grid by establishing arcs. Use the same measurements thatwere in steps 8 and 9 to determine the north-south and east-west limits (fig 2-10).Figure 2-10. Shoving the four corners.a. This is not as difficult as it sounds. Take the bar beam compass and carefully set the pointsat 24 centimeters. Place the pinpoint exactly at one of the points where the 30 centimeter arc crossesthe vertical centerline. Swing an arc on both sides of the vertical centerline. Then repeat the sameprocedure at the other 30 centimeter arc (fig 2-11).Figure 2-11. Construct east-west corners.27