An angle and comparator of angles (Machine-translation by Google Translate, not legally binding)

摘要

A LEVEL AND COMPARATOR OF ANGLES, characterized essentially by the fact of establishing as its main base two parts: a static and a dynamic one; the first of which comprises an angle or square of 90º, and a box whose geometric center coincides with the intersection of two perpendiculars that intersect each other and that also cut, respectively, each of the laces of the square, while the dynamic part, mounted in said box, is constituted by an axis, located in the intersection of the perpendiculars, of which a counterweight and a needle are integral, both elements being in parallel so that the position of the counterweight and the needle coincide in every moment with the direction of the force of gravity. (Machine-translation by Google Translate, not legally binding)