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. Slide the grid so the dot sits on the 120 TAS line. The center grommet shows a GS of 118 knots. The dot is 10∘10 raised to the composed with power to the right. Add 10∘10 raised to the composed with power 090∘090 raised to the composed with power course to get a 100∘100 raised to the composed with power Set 290∘290 raised to the composed with power at the top. Mark a dot 25 knots up. Turn the wheel to 320∘320 raised to the composed with power
Set the rate index arrow to 135. Find 180 on the outer scale. Look below it to find 80 on the inner scale.