It seems he did not introduce many improvements in methods, but he did propose a means to determine the geographical longitudes of different cities at lunar eclipses (Strabo Geografia 1 January 2012).
Čini se da on nije uveo mnoga poboljšanja u metode, ali je predložio načine određivanja geografskih dužina različitih gradova tijekom mjesečevih pomrčina (Strabonova Geografija 7).