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Three-Legged Compass Walk
This page: http://pierce.wesleyancollege.edu/faculty/MSP/orientex/three-legged.html
For this exercise you will navigate a clockwise course which is an equilateral triangle, ten paces on each side, with two 120-degree turns. This will test the consistency of your stride length and the accuracy of the bearings that you establish.
1) Choose a starting location on the MSP Plaza. Place a marker at this location. Enter a brief description as "Start Location" in the table below.
2) From your starting point orient your compass and establish a bearing to a prominent landmark. Trees, bushes, lamp poles, and fountains make good landmarks for this exercise. Enter your initial bearing as "Heading #1" and your landmark as "Landmark#1" in the table below.
3) Walk ten paces in the direction of your initial heading. Remember that each "pace" is actually a right foot and a left foot step.
4) Add 120 degrees to heading #1. If this sum is greater than 360 degrees, subtract 360 degree from this sum. Enter this value as "Heading #2" in the table below.
5) Orient your compass, establish this new heading, and find a landmark on this bearing. Describe this landmark as "Landmark #2" in the table.
6) Walk 10 paces on this new heading.
7) Add 120 degrees to heading #2. Again, if this sum is greater than 360 degrees, subtract 360 degree from this sum. Enter this value as "Heading #3" in the table below.
8) Orient your compass, establish this new heading, and find a final landmark on this bearing". Describe this landmark as "Landmark #3" in the table.
9) Walk 10 paces on this final heading.
If your paces were consistent, your math correct, and your bearings accurate, you should be back where you started. How close did you come?
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Start Location: |
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Heading #1: |
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Landmark #1: |
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Heading #2: |
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Landmark #2: |
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Heading #3: |
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Landmark #3: |
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