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The description and use of the sector, crosse-staffe, and other instruments : with a canon of artificiall Sines and Tangents, and the use thereof in astronomie, navigation, dialling and fortification by Edmund Gunter (1636)
A simple device to measure angles in sky. By measuring the angle between the horizon and Polaris an observer can determine their latitude
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Instrumentos de navegación en el siglo XV: claves para los viajes de Cristóbal Colón
Descubre los principales instrumentos de navegación usados en el siglo XV, cómo se determinaba la latitud y el rumbo, y su papel fundamental en los viajes de Cristóbal Colón hacia América. Introducción En el siglo XV, cuando Cristóbal Colón se preparaba para su viaje hacia América, los navegantes dependían de instrumentos que hoy podrían parecer rudimentarios, pero que en su momento fueron…
