Play

First find the lat and long on the chart

37 deg T

Now align the parallel rules with your position and Bartlett Reef

Now walk the rulers to the compass rose and observe the angle

Continue

Use dividers to measure the distance from your location to Bartlett Reef

Now use the parallel rulers to draw a parallel latitude line at 41 deg 15.2 min.

Now draw a parallel longitude line at 72 deg 9.5 min

72 deg 9.5'

1.5 nm

41 deg 15.2'

Replay

The GPS puts us at 41 deg 15.2 min N and 72 deg 9.5 min E. Plot that position. At what true direction is  the Bartlett Reef Aton horn? And distance?

Use dividers to measure the distance from your location to Bartlett Reef and using the latitude scale.