Furniture, ContinuedT-squaresUse a T-square to draw straight, horizontal lines and to provide support fortriangles when you draw lines at an angle. The two parts of a T-square arethe blade and the head. The blade comes in different lengths and has a holein the far end for hanging the T-square up for storage. The most popularblade length is 36 inches. The head mounts under the blade at a 90-degreeangle and rests against the table edge. It guides the T-square in an up-and-down movement on the drawing surface. Because a T-square allows verylittle adjustment when it is damaged or out of true, throw it away and getanother.Figure 2-15 shows a T-square positioned on a drawing board.Figure 2-15. —A t-square on adrawing board.Figure 2-16 illustrates the direction for drawing horizontal lines against aT-square or straightedge.Figure 2-16. —Drawinghorizontal lines with at-square.Continued on next page2-17
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