Paragraph 6. The marking gauge is used to draw lines parallel with the working edge. By the use of the thumbscrew the marking gauge can be set to gauge lines at any distance from the working edge. To set the marking gauge use the ruler and measure from the head of the gauge over to the marking point, then tighten the thumbscrew. When the gauge is set to the desired distance, the line should be drawn by pushing the marking gauge the length of the material, carefully holding the head of the gauge firmly against the working edge, as shown in Figure 23. Note that the gauge should be tilted from you somewhat so the point will not enter the wood too deeply. A mechanic does not attempt to pull a marking gauge, because in so doing it is almost impossible to hold the head firmly against the working edge.

Figure 23.