# Quick Answer: What Are Extension Lines Leader Lines And Dimension Lines?

## What is the leader line?

A leader line is a line that establishes a connection between a graphical representation of an item and some text.

A leader points to a bit of our drawing and says: ‘Oi – Look Here’ and ‘Read This.

The leader line itself should be a continuous Thin line (see this post on Linetype Definitions)..

## What is leader line in dimensioning?

A leader line is a line referring to some form of feature that could be a dimension, an object or an outline. … This can be a dot if the line ends within the outline of the part, an arrow if the line touches the outline or centre line of a feature or without either an arrowhead or a dot if the line touches a dimension.

## 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.

## What is the purpose of extension lines?

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 are alphabet lines?

The Alphabet of Lines is a list of line symbols that engineers use in technical drawings to communicate specific shapes, sizes or surfaces. In the Alphabet of Lines, thick, dark lines represent the outline of an object, showing its visible surfaces and edges.

## Can centerlines be used as extension lines?

A centerline may be extended and used as an extension line, in which case it is still drawn like a centerline. Centerlines should not extend from view to view. Leaders for notes should be straight, not curved, and point to the center of circular views of holes wherever possible.

## 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:

## What are extension lines?

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.

## 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 an example of a 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™.

## What are construction lines?

Construction lines (also known as xlines) are temporary linework entities that can be used as references when creating and positioning other objects or linework. For example, you can use construction lines to prepare multiple views of the same item, or create temporary intersections to serve as object snaps.

## What are typical dimension line terminators called?

ArrowheadsArrowheads are typical dimension line terminators. There are other acceptable dimension line terminators. Arrowheads point directly to the object that is being dimensioned or the extension lines at the end of the dimension. Arrowheads are made three times as long as they are wide.