For accurate alignment, one must correct for this discrepancy. However, for the sundial in this handout, magnetic north will do. Lastly, you need to acquire a gnomon. The enclosed sundial uses a vertical gnomon that is specifically 0.5 inches in height . Any thing will work.
Some ideas are a tooth pick, a twig, or a triangluar sheet of paper.
This shows the construction of the triangular gnomon. To set up the triangular gnomon, you need to obtain a sheet of paper with square corners, a protractor, a ruler, and a pair of scissors. Make sure the sheet of paper you obtain has square corners . If you use a piece of paper that does not have square corners, your sundial will not give the correct time. On your sundial, you will see two x's.