The boy craftsman; practical ad profitable ideas for a boy's leisure hours . FiG. 40. — Gauging with Rule and Pencil. tion, with a steady hold on the rule and pencil, moveyour hands along the board. The result will be a lineparallel to the tried edge. At first you may have trouble in making a straightline, but with practice you will be able to hold the ruleand pencil steadily. For particular work, where it is necessary to get aperfectly straight and parallel line, A Marking-gauge should be used. This is nothing 44 PROFITABLE PASTIMES more than the above principles combined in a tool. Itconsist
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The boy craftsman; practical ad profitable ideas for a boy's leisure hours . FiG. 40. — Gauging with Rule and Pencil. tion, with a steady hold on the rule and pencil, moveyour hands along the board. The result will be a lineparallel to the tried edge. At first you may have trouble in making a straightline, but with practice you will be able to hold the ruleand pencil steadily. For particular work, where it is necessary to get aperfectly straight and parallel line, A Marking-gauge should be used. This is nothing 44 PROFITABLE PASTIMES more than the above principles combined in a tool. Itconsists of a graduated shaft, or rule, with a small needleor spur in one end, which slides through a mortise madein a block of wood known as the head. To operate the gauge, set the adjustable head at therequired division on the shaft, and then grasp the headand shaft with the fingers of the right hand, as shown in. Fig. 41. — Using the Marking-gauge. Fig. 41. Place the outer face of the head against thetried edge of your work, and then, pressing the spur intothe wood, move the gauge along the board, at the sametime keeping the face of the head firmly against theedge of the board. The gauge is much more conven-ient than the other method of drawing parallel lines, foryou can repeat the measurement as often as you wish, THE PROPER HANDLING OF TOOLS 45 iriiiiiiiriiiiiiiriiiiiiiiiiii steel-square, asin Fig. 42, with having once adjusted the head, without having to layit off again. A Try-square with a mitred handle costs but littlemore than the ordinary make, and is much handier, in-asmuch as it can be employed in making mitres, byplacing the bevelled end against the side of the workinstead of the straight side (see Figs. 38 and 39). The Bevel is in reality a try-square which can be ad-justed to any desired angle. To set it at an angle of forty-five degrees, place iton theshown the handle against th