De Beghinselen Der Weeghconst

De Beghinselen der Weeghconst ("The Principles of Statics", lit. "The Principles of the Art of Weighing") is a landmark book written in the Dutch language by Simon Stevin in the 16th century.
Importance.
"De Beghinselen of Weeghconst" is a book about statics, written by Flemish physicist Simon Stevin. It was published in 1586, in a single volume with "De Weeghdaet" ("The Act of Weighing"), "De Beghinselen des Waterwichts" ("Principles of Hydrostatics"), and an "Anhang" (an appendix). In 1605 there was another edition.
The importance of the book was summarized by the "Encyclopædia Britannica":
Contents.
The first part consists of two books, together account for 95 pages, here divided into 10 pieces.
Book I.
Start: panegyrics, Mission to Rudolf II, Uytspraeck Vande Weerdicheyt of Duytsche Tael, Cortbegryp
Bepalinghen and Begheerten (definitions and assumptions)