This article focuses on the theoretical developments of Mechanics, a pioneer work about the mechanical instruments written by Galileo Galilei (1564-1642) in the 1590's. This paper aims to point out to the contemporary reader the particularities of the concepts and arguments of Galileo's text, which are previous to the ones that constitute the so-called classical physics, in which the most of nowadays readers have been educated.
Balance; Lever; Statics; Dynamics; Mechanics; Galileo
