Automatic board for the preparation of plans and perspectives. (Machine-translation by Google Translate, not legally binding)

摘要

Automatic board for the preparation of plans and perspective, characterized in that there is a device for executing plans and a board for executing perspective, the device referred to in an articulated game consisting of two rules perpendicular to one another, which can be traversed all the points of the central panel, always keeping the vertical and horizontal position corresponding to each of the rules, also comprising a graduated device that allows inclinations from 0º to 180º for fractions of 15º, with the advantages that have been indicated. (Machine-translation by Google Translate, not legally binding)