Drawing aids, ContinuedTriangles(continued)AdjustabletrianglesFigure 2-44 shows two standard triangles.Figure 2-44. —Drafting triangles.Use an adjustable triangle for drawing lines inclined at irregular angles to thehorizontal. This type of triangle has a set of scales for measuring off anangle and a thumbscrew for setting the angle. Care for an adjustabletriangle as you would other triangles.Figure 2-45 shows an adjustable triangle.Figure 2-45. —An adjustable triangle.Continued on next page2-38
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