(Berlin, Haude et Spener, 1758). 4to. No wrappers as issued in "Mémoires de l'Academie Royale des Sciences et Belles-Lettres" Tome 12 (1756), pp. 365-386 a. 2 folded engraved plates.
First apperance of the paper in which Aepinus gives a mathematical analysis of a micrometer adapted to a quadrant circle, his only publication related to satronomy.