EditorialQua ratione turris alicuius altitudinem deprehendas, oculo in eius sumitate existente?, Altitude measurement of a tower from the tower with a sun quadrant, Fig. 11, p. 38, 1533, Petrus Apian: Horoscopion Apiani generale dignoscendis horis cuiusqumque g...
EditorialQuo pacto signi alicuius in terra propositi distantiam ? Basi rei in cuius summitate dimensor est commensurare queas?, Distance measurement of two objects from a tower with a sun quadrant, Fig. 12, p. 39, 1533, Petrus Apian: Horoscopion Apiani generale...