Diam. Circum. Diam. Circum. Diam. Circum. Diam. Circum. 6 996 5667 2 9 2 10 4697 Ft. In. Ft. In. 7 118 788 1 11 2 0 5 10 5 10 5 11 5 11 5 11 60/ 6 04 2 5 2 6 77 7 48 ་སས 6 3 6 3 ∞ ∞ 3 0 OBSERVATIONS ON TABLE V. As this Table, together with the following one, will be useful to those smiths who chiefly work angled iron, it will be necessary to remark, that the observation made on Table I., respecting adding the thickness of the iron to the diameter, must also be attended to in this, with this difference,—the breadth of the angle must be added to the dia meter. Example. Suppose, as in the following sectional figure, a hoop is wanted to be made of 2-inch angled iron, whose diameter inside must be 12 inches. Here the 2 inches must be added to the 12 inches, which raises the number to 1 foot 2 inches. Looking into the Table, I find the circumference, or length of iron requisite for the hoop, is 3 feet 6 inches. 12 inches inside. 2 in. J. F. |