Input (grade 9): The first description of this scale was published in Paris in 1624 by Edmund Wingate (c. 1593 â "1656), an English mathematician, in a book entitled L'usage de la reigle de proportion en l'arithmetique & geometrie.
Output (grade 9): The first description of this scale was published in Paris in 1624 by Edmund Wingate (c. 1593 - 1656), an English Mathematician, in a book entitled â L'usage de la reigle de proportion en l'arithmetique & geometrieâ.