Speed indicating device in tachymeters, particularly of motor vehicles (Machine-translation by Google Translate, not legally binding)

摘要

Rate indicating device in tachymeters, particularly of motor vehicles, characterized by being constituted by an articulated parallelogram whose two long sides, of equal length constituted one by a radius of the measuring element of the tachymeter and by a bar extending said radius, integral with the measuring element, and the other by a rod articulated on the frame of the same tachymeter, are articulated at points equally far from the respective centers of oscillation, with a piece of support of the indicator itself, rigidly fixed on it. (Machine-translation by Google Translate, not legally binding)