Duodecimal arithmetick : viz. Notation. Addition. Subtraction. Multiplication. Division. Reduction. Extraction of the-square, and cube roots. Rule of proportion-direct, and reverse. Duodecimally performed, and very practically applied to the measuring of all sorts of superficies, and solids, as board, glass, &c. timber, stone, &c. But chiefly to the ganging [sic] of all sorts of brewers tuns and casks, to find the whole content, or the vacuity or remaining liquor of either, and that with more ease and expedition, than by vulgar or decimal arithmetick. Very useful for all sorts of men, aswel [sic] gentlemen as others, but especially for merchants, writing masters, and all measuring artificers. And all the rules made plain, and easie for the meanest capacity.
by: Jordaine, Joshua
Published: (1687)
