Visible lines are used to represent features that can be seen in the current view. Stitch lines - to indicate a sewing or stitching process. Phantom lines are used to represent a movable feature in its different positions.
Section lines (hatching) are used in section views to represent surfaces of an object cut by a cutting plane. to mark the centers of circles and the axes of symmetrical parts, such as cylinders and bolts.īreak lines are used to show where an object is broken to save drawing space or reveal interior features.ĭimension and extension lines are used to indicate the sizes of features on a drawing.The standard line types used in technical drawings are The alphabet of lines and the approximate dimensions used to create different line types, are referred to as linestyles when used with CAD. The alphabet of lines is a set of standard line types established by the American National Standards Institute (ANSI) for technical drawing. In Graphics Communication practice there is the whole collection of different lines, which are used for drawing purposes. Alphabet of Lines What is the main image, which we are using in all our projects, designs, drawings?
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