Quo 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 dignoscendis horis cuiusqumque generis aptissimum [...]. His accedit distantia[rum]; altitudinum; & profunditatum per idem hoc instrumentum dimetiendarum ratio longe accuratissima & ingeniosa [...]. [Ingolstadt]: [Apianus]; [1533]