Drawing Aids, ContinuedIrregularThe two types of irregular curves common to a Navy Graphics shop arecurvesradius curves, sometimes called railroad curves, and french curves.RADIUS CURVES: Radius curves are used for drawing large arcs. Theradius of these arcs are from 1 1/2 to 1,000 inches. Some radius curves havea flat segment on one end, called a tangent.Figure 2-46 shows radius curves.Figure 2-46. —Radius curves.FRENCH CURVES: Use a french curve for drawing irregular ornoncircular curves. Some french curves have an ink riser as part of theirdesign. If your french curves do not have an ink riser, put one on withmasking tape.Figure 2-47 shows typical shapes for french curves.Figure 2-47. —French curves.Continued on next page2-39
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
