Autodesk 057A1-05A111-1001 Getting Started Guide - Page 19

Draw Accurately Engineering and architectural drawings require a high degree of accuracy. With CAD, you draft more accurately than with manual methods. With object snaps, when you place your cursor here... you can snap to the center point automatically. The polar tracking feature displays visual guidelines at specific angles and can snap the cursor to an angle. With manual drafting, you must draw objects carefully to ensure correct size and alignment. Objects drawn to scale must be manually verified and dimensioned. With AutoCAD and AutoCAD LT, you can use several methods to obtain exact dimensions. The simplest method is to locate points by snapping to an interval on a rectangular grid. Another method is to specify exact coordinates. Coordinates specify a drawing location by indicating a point along an X and Y axis or a distance and angle from another point. With object snaps, you can snap to locations on existing objects, such as an endpoint of an arc, the midpoint of a line, or the center point of a circle. With polar tracking, you can snap to previously set angles and specify distances along those angles. In this drawing of a pumping station, object snaps were used to ensure that lines connected perfectly. Polar tracking was used to draw lines at correct angles. Draw Accurately | 13