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On the cover:
Mayo 2017 Universidad Central del Ecuador Instituto Geografico Militar 000’0’’ National Society of Prefessional Surveyors USA Hemisphere GNSS . Bernisen
A point on the equator that is at Quitsato Sundial - a small astronomical museum. An anecdote on the sign posted by the Ecuadorian Military Geographic Institute says that if one stands on it, one foot is in the northern hemisphere and one in the southern.
GNSS - Global Navigation Satellite System acronym - satellite navigation system (for example: GPS).
Translation of the text on the sign: May 2017 Central University of Ecuador Geographic Military Institute