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Technical Drawing Line Types


Technical drawing Lines are used for different purposes to provide specific information for designers, manufacturers, etc. looking at the drawing. The person who will read drawings have to learn what they mean. Line types are also a language type to communicate between technical people.





A; Continuous Thick Line: Surroundings and sides of the matters ( Outlines of the Edges), End of the Screws,


B; Continuous Thin line: Measure lines, Backside section lines, Implied axis lines, to state the code of the planes, at diagonal lines which are used to state plane surface, Intersection, Leader, Hatching.


C; Dashed Thin Lines: Invisible/Hidden Lines represents an invisible edges on the on an objects.


D; Dashed Thick Lines with Dots: To state the special places/surfaces which will processed additionally like to coat, to harden etc.


E; Dashed Thin Lines with Dots: Axis lines of symmetrical drawings, In front of section planes.


F; Chain Thin with Thick Ends: Cutting Plane, To draw the trace at section planes,


G; Continuous Thin Zigzag Line: It is used when free hand lines are drawn by tools


H; Free Hand Line: Limits of partial and interrupted views and sections


I; and J; Parts situated in front of the cutting planes, outlines of adjacent parts, Censorial Lines, to state center of gravity


ANSI Technical Drawing Views


A: Projected Two View Drawing;





B: Section View; Section View allows Designer to show internal feature of the objects. Section View are highly useful in minimizing the number of projected views.





C: Auxiliary View; Auxiliary View are usually used to show inclined and oblique surface true size. inclined and oblique surface do not show true size in the standard views.





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