This fine sub-division will be found very useful, particularly so when used as a scale to measure drawings made in half, one-quarter, one-eighth or one-sixteenth of an inch to the foot.
PRACTICAL USES OF THE
STEEL SQUARE
We now take up a square void of any attachments, and one which has become quite popular in the west and the middle southern states. I refer to the “Nicholls Square,” a representation of one side of which is shown at [Fig. 1]. This square is a new one on the market, and presents some advantages over many now being sold. The manufacturers direct special attention to the fact that the board measure has been replaced by a simple rule for framing, and that there is to be found the lengths and figures giving the cuts for an entire roof, also the cuts for cornice of the same. The tongue on the square is 1¾ inches wide, thus making it convenient for spacing, as much of the dimension lumber is 1¾ inches thick. The general directions for using this square—a copy of which is given to every purchaser of a square—are presented herewith, so that the reader will be able himself to judge of the merits of the tool. These squares are numbered or graded according to the graduation marks and quality of finish.
Fig. 1.
“The face of a square is the side on which we stamp our name. The reverse is the back. The longer arm is the body, the other is the tongue.
Framing Rule.—The first line of figures gives the length of common rafters for one foot run.
The second line of figures gives the length of hip or valley rafters for one foot run.
The third line of figures gives the length of first jack rafter and the difference in the length of the others spaced 16 inches on centers.
The fourth line of figures gives the length of first jack rafters and the difference in the length of the others spaced 2 feet on centers.