Indicating device for the graphic representation of data or variable variables (Machine-translation by Google Translate, not legally binding)

摘要

Indicating apparatus for the graphic representation of data or various variable values, characterized by comprising a series of tapes divided transversely into two halves of different color and arranged in a closed ring around two pairs of freely rotating guide rollers on two horizontal axes, the assembly mounted on a frame or box provided on its front face with a transparent plate through which a certain extension of said ribbons appears, which comprises the transit from one to another zone of different color. (Machine-translation by Google Translate, not legally binding)