Why use 'Add Dimension'?
Use Add Dimension to define the Length or Radius of a sketchelement, or the Distance, or the Angle between sketchelements.
Note:you can also define the Distance, or an Angle, between the Xaxis or Yaxis and a sketchelement.
See more How to add a dimension
Add Dimension

Toolbar :


Menu :


To Add a Dimension:
2.  PartEditor: Click sketchelements to add a distance, a radius, or an angle 
The dimension shows near to your mousepointer.
3.  PartEditor: Click in the graphicarea to place the dimension and extension lines next to your mousepointer. 
The Dimension dialogbox opens.
4.  Edit the dimension in the dialogbox 
5.  Click to close the Dimension dialogbox 

The Dimension is now in the graphicarea.


Notes:
•  When sketchelements are fully defined, you cannot add a drivendimension. 
You can add Measurement FB in the MechanismEditor as a drivendimension.
•  Generally, do not make a dimension zero. It is better to add a constraint (See SketchConstraints toolbar) to move Lines or Points together. 

See also: Dimension Font Size

To edit a Dimension:
1.  Deselect all other commands 
2.  Doubleclick the arrowhead of a dimension element 
Why the 'arrowhead'?
MechDesigner will not respond if you click the Dimension Number
And, simply, it is more difficult to click the dimensionlines or extensionlines.
See How to open a Dialogbox

How to add a dimension:
Locate a Point in a Part in one of two ways:

Add Dimensions
Examples

Dimension

How?

SelectionWindow
GeometryTree


•  Shortest distance between two Points 


DimPtoPn


•  Perpendicular distance between a Point and a Line 
•  You can also use the X–axis and the Y–axis as a line. 

•  Click the Point then the Line (note Arcs, Circles and Lines have Points) 

DimPtoLn

Lock & Specify in the Point Vector and Location dialog box
Example

Dimension

SelectionWindow / GeometryTree


•  Lock and Specify the exact location of a Point in a Part. 
•  The Point cannot be moved accidentally. 

Pointn
Note:
You cannot Lock and Specify the Point if the Point
or

How?

1.  DoubleClick a Point in the PartEditor 
 or 
1.  DoubleClick a Point in the MechanismEditor 
The Point Vector Display and Location dialogbox opens.
Expand Point Coordinates
2.  Select the Lock and Specify checkbox. 
3.  Enter 'x' and 'y' values for the Point, with Part Coordinates 


Example

Dimension:

How?

SelectionWindow / GeometryTree




Dimn


•  Distance between two parallel Lines 
•  Distance between an axis and a parallel Line 

1.  Click a Point at the end of one of the Lines 

DimLtoLn


•  Shortest distance between two Points 


DimPtoPn


•  Horizontal Distance between Points 

1.  Add a Vertical Line from one of the Points 
2.  Click the Line and the other Point 



•  Vertical Distance between Points 

1.  Add a Horizontal Line from one of the Points 
2.  Click the Horizontal Line and the other Point. 



•  Perpendicular distance between a Point and a Line (or axis). 

Toptip: Click the Point then the Line (or axis).
Note: Arcs, Circles and Lines have Points.

DimPtoLn

Example

Dimension:

How?

In SelectionWindow as:



•  Click the Circumference of a Circle 

DimRadiusn



•  Click the Radius of an Arc 

DimRadiusn

Example

Dimension:

How?

In SelectionWindow as:


•  Angle between three Points 

•  Click the Point that will form the apex of the angle, followed by the other two Points. 

DimAngPPPn


•  Angle between an axis and a Line 
The Lines do not need to cross.

The displayed angle has rules. See Below

DimAngLtoLn

Angle between two Lines  Rules:
The dimension shows next to your pointer when you select two Lines. Before you click your mouse again to define the displayed angle, you can select which angle to display.
There are eight possible angle dimensions:
•  Move your mouse counterclockwise around the apex of the two Lines, the 'acute', 'obtuse', 'supplementary', or the 'vertical' angle <180° will show. 
•  Move your mouse clockwise around the apex of the two Lines, and the 'reflex' angles to the other angles will show. 

Video:
