Why use 'Add Dimension'?
Use Add Dimension to add dimensions to locate sketchelements.
Add Dimension can define Distances and Angles.
See more 'How to add a dimension'.
TopTip  Learn how to edit a dimension in the dimension dialogbox!
Add Dimension
R13

Toolbar:

Leftside of the PartEditor graphicsarea

Menu:


To Add a Dimension:
1.  Click Add Dimension in the SketchElements toolbar 
2.  Click one or more sketchelements 
Add a dimension to locate a Point, dimension a distance, a radius, and an angle.
See more details below
The dimension shows near to your mouse pointer
 or 
If the dimension you want to add is already defined, with dimensions or with other constraints, then the dimension does not show.
3.  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.  To close the the Dimension dialogbox 
•  Click the tick button 
OR
•  Press the 'enter' key on you keyboard [R13.2+] 

The Dimension is now in the graphicarea.


To open the Dimension dialogbox again so that you can edit a dimension:
1.  If necessary, deselect Add Dimension ['Add Dimension' cannot be active]. 
2.  Doubleclick the arrowhead of the dimension element 
or
1.  Click the arrowhead of the dimension element 
Note  we recommend the arrowhead because it is is easier than the dimensionlines or extensionlines.
MechDesigner does not respond if you click the Dimension Value/Number..


Notes:

•  When sketchelements are fully defined, you cannot add a new dimensions or constraints. You can use the Measurement FB in the MechanismEditor to add a 'Driven Dimension'*. 
•  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

How to add a dimension to:
Specify the location of a Point in a Part in one of two ways:

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

Use '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 it has zero or one degreeoffreedom.

How?

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

You can drag a Point sketchelement in the MechanismEditor:
If you:
•  Add a Point sketchelement 
•  Do not add a Dimension or a Constraint to the Point sketchelement 
and you
•  Add a TracePoint to the Point in the MechanismEditor 
and the
•  Part is a kinematicallydefined Part. 
Note: The drag option does not apply to a Point at the end of a Line or Arc sketchelement  it must be a Point sketchelement

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 the Circle 

DimRadiusn



•  Click the Radius of the Arc 

DimRadiusn

Example

Dimension:

How?

In SelectionWindow as:


•  Angle between an axis and a Line 
*The angle is between the intersection of the Line 'rays', even if the Lines do not cross.

The displayed angle has rules. See Below
Bug: When you edit an angle: sometimes the angle does not like passing through 180. If MechDesigner hangs, then please wait, maybe a minute!

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, select which angle to display; from a possible eight:
•  If you move your mouse (in a circular fashion) 'anticlockwise' around the *intersection of the two Lines, MechDesigner draws the angle less than 180° for the four angle possibilities – the 'acute', the 'obtuse', the 'supplementary' or the 'vertical' angle. 
•  If you move your mouse (in a circular fashion) 'clockwise' around the *intersection of the two Lines, the four 'reflex' angles to the four 'anticlockwise' angle possibilities are displayed. 



•  Angle between three Points 

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

DimAngPPPn
