Question: What Are Extension Lines?

What is the definition of extension line?

Line Conventions, Continued Extension lines Extension lines are thin lines that extend from the object outline or point on the object to a place outside the image area.

Extension lines define areas for dimensions..

What are extension lines Leader lines and dimension lines?

(a) Extension lines are used to indicate the extension of an edge or point to a location outside the part outline. (b) Dimension lines show the direction and extent of dimension. (c) Leader lines are used to direct an expression, in note form, to the intended place on the drawing.

What is extension line in Autocad?

Fixed-Length Extension Lines You can specify a dimension style that sets the total length for extension lines starting from the dimension line toward the dimension origin point. The extension line offset distance from the origin will never be less than the value specified by the DIMEXO system variable.

What are the 8 rules of dimensioning?

Terms in this set (8)Rule 1: Dimensions should not be duplicated, nor should the same info be given in two different ways.Rule 2: Dimensions should be attached to the view that best shows the contour of the feature being dimensioned.Rule 3: … Rule 4: … Rule 5: … Rule 6: … Rule 7: … Rule 8:

How do you use hidden lines?

Hidden lines are dashed lines used to represent internal features that are obscured by the object. These hidden lines represent the obscured corner of the notch. potential hidden lines in this sketch fall directly behind visible lines in the right side view.

What are extension lines used for?

Extension Lines – are used to extend a surface or a point beyond the outline of the object so that a numerical size can be related to that surface. A small gap is left between the extension line and the outline to which it refers.

What is an example of line extension?

What is a brand line extension? A company introduces a brand line extension by using an established product’s brand name to launch a new, slightly different item in the same product category. For example, Diet Coke™ is a line extension of the parent brand Coke™.

Can Leader lines cross extension lines?

However, extension lines may cross each other. … Center lines should generally not extend from view to view. 26. Leaders for notes should be straight lines (not curved), drawn at an angle, and aimed towards the center (but stopping at the edge of the circle) in the circular views of holes whenever possible.

What is the purpose of leader line and extension line?

Extension lines are also thin lines, showing the limits of dimensions. Dimension line arrowheads touch extension lines. Leaders are more thin lines used to point to an area of a drawing requiring a note for explanation. They are preferably drawn at a 45° angles.