Hence all Measurements made by the sextant are too large.
"Lectures in Navigation"
Ernest Gallaudet Draper
If you can determine exactly how far North you are of the sun and how far North the sun is of the equator, you will, by adding these two Measurements together, know how far North of the equator you are, i.
"Lectures in Navigation"
Ernest Gallaudet Draper
Daily, by careful Measurements, I found that our night shadows shortened and became more uniform during the passing hours of the day, as the shadow dial was marked.
"My Attainment of the Pole"
Frederick A. Cook