When it is desired to saw off the end of the stock it is first necessary to mark or square clear around it with the knife and try-square. In doing this the beam of the try-square must be used against the work face and joint edge only. Large squares made of steel in one piece are called framing squares, and are used by carpenters and others for rough or large work.
Fig. 5. The Framing Square
Fig. 6. The Marking Gauge
3. The Marking Gauge. The marking gauge is shown in Figs. [6] and [7]. A is the gauge stick, B the gauge block, S the set screw, and P the marking point, or spur. The gauge stick is graduated like a rule into inches and fractions, beginning at the steel marking point; but as the latter is not always exactly in the right place the graduations are not entirely reliable. It is safer then to set the gauge with the rule in the manner shown in [Fig. 7].
Hold gauge bottom side up in left hand and rule in right. Place end of rule against gauge block and the measurement desired at spur. Turn set screw. The gauge is then accurately set. In the cut the gauge is set at one inch and is ready for use.
Fig. 7. Setting the Marking Gauge