Fig. 8.
Fig. 9.
4. The Bevel.
—The bevel differs from the try-square in having a movable blade. [Fig. 9]. This blade may be set at any desired angle from 0 to 180 degrees. The manner of using the bevel is similar to that of the try-square. When adjusting, the blade should be just loose enough to move upon the application of slight pressure.
There are various ways of setting the bevel to the required angle. Should the triangle used in mechanical drawing be available, angles of 30 degrees, 45 degrees and 60 degrees are easily obtained by adjusting the bevel to the sides of the required angle.
Fig. 10.
To set the bevel to 45 degrees by means of the framing square, hold the beam against one of the arms, [Fig. 10], and move the blade so that it shall pass through corresponding points on both blade and tongue. [Fig. 11] illustrates a method in which no other tools are needed. A line is squared across a board having a straight edge. Equal distances are measured from the point at which the line cuts the edge, the blade then being made to pass through these points while the beam is held tightly against the edge.
