If the beam projects beyond the end of the wood, it should be reversed. The knife should be inclined forward and away from the blade of the try-square slightly. A light, firm line should be made the first time across the piece.
Fig. 6.
In testing edges or ends for squareness, the beam should be held, as in lining, firmly either against the face side or the face edge. [Fig. 6]. Care should be taken to test the extreme ends of the piece. Also test at a sufficient number of points to show fully the condition of the edge. Sliding the try-square along the edge is not objectionable if the blade be held lightly on the surface. Under no circumstances should the try-square be used to scrape the wood.
Fig. 7.
In testing a piece to see whether it is of the same width or thickness thruout its entire length, place the blade across the surface to be tested, holding the beam lightly against the face side or face edge, slide the try-square along the piece with the eye fixed upon the graduations at the outer edge. [Fig. 7].
3. The Framing Square.
—Large squares of one piece of steel, called framing squares, are used by carpenters for large and rough work. The long arm is called the blade and the short one the tongue. [Fig. 8]. In addition to the divisions into inches and fractions of an inch, there is on the blade a board measure table and on the tongue a brace or rafter measure table. This square will be found convenient when “cutting up” stock, also for testing corners of large pieces of furniture and for setting the bevel to various angles.
