SUBCOURSE EDITION - Modern Prepper

Step 3: Determine the approximate center of the plot sheet by drawing light diagonal linesconnecting the opposite corners (fig 2-2). Use your long straightedge and lay one edge against theopposite corners. Now, draw a light line at approximately the mid-point of the sheet of mylar. Repeatthe same operation using the other two opposite corners. Where the two lines intersect is the center ofthe sheet.Figure 2-2. Determining approximate center.Step 4: Draw a horizontal centerline through the center of the plot sheet approximately parallel to thebottom edge (fig 2-3). Insure that the line passes exactly through the point where the diagonal linesintersect.Figure 2-3. Drawing a horizontal centerline.21