Modern researchers can access a digitized facsimile of this work through the Internet Archive or specialized catalogs like Zenodo. 2. Sixteenth-Century Nautical Treatises - UPLOpen

Provides specific sets of rules or instructions for using the astrolabe and quadrant to determine solar declination and geographic position.

The library catalogs it as circa 1510, though scholars have debated dates ranging from 1509 to 1516.

A write-up on typically refers to a highly significant historical document in the field of maritime navigation: the Regimento do estrolabio y do quadrante (c. 1510). The identifier "BS.rar" is a shelfmark used by the Bayerische Staatsbibliothek (Bavarian State Library) to catalog this rare incunable. Historical Significance

Includes 32 identical diagrams explaining celestial mechanics and the Earth's position in the universe.