School board for the teaching of language. (Machine-translation by Google Translate, not legally binding)

摘要

School board for the teaching of language, characterized by being a vertical panel with an elongated shape, divided into a series of spaces, by means of t section profiles, mounted horizontally to the full width of the panel. These profiles serve as slides to a rectangular shaped plate that has a figure, letter or sign on it's face engraved or painted, intended for teaching, these plates being replaceable. (Machine-translation by Google Translate, not legally binding)