<< Click to Display Table of Contents >> Navigation: MechDesigner Reference & User Interface > FAQs and 'How do I...?' > Part Editor: FAQs and How to...? > How to...? > ... edit the Length of a Part? 
To edit the length of a Part is one of basic tasks.
Key Learnings
•How to start the PartEditor to edit a Part
•In the PartEditor: deselect an active command, if necessary.
•To open the Dimension dialogbox: doubleclick the arrowhead or extension line of a dimension, or see How to edit open a dialogbox
NOTE: If you doubleclick the dimensionvalue itself, the Dimension dialogbox will NOT open.
Start the PartEditor. See also: How to start the PartEditor For example: STEP 1: DoubleClick the PartOutline of the Part you want to edit
You are now using the PartEditor. 

To edit a dimension: STEP 2: DoubleClick the arrowhead of the dimension The Dimension dialogbox opens. STEP 3: Enter a new dimension There are four(4) methods to use: Method 1) Enter a new dimension directly with your keyboard Method 2) Enter an equation with your keyboard Method 3) Use the spinbox tool Method 4) Rightclick the databox, then click Zero, Round, Copy or Paste. 1.Click the to close the dialog. Notes: Methods 1 and 2 : Direct and Equation: Click the ENTER key () on your keyboard to update the dimension to the new value. Method 3: SpinBox: The dimension AND the model updates immediately  if the model is large, there is a delay after each click Method 4 Round: The Dimension changes to the nearest value that is exactly divisible by the SpinIncrement 

More on Method 2 : EQUATIONS: •Simple Arithmetic: +, –, *, ∕ •Powers: ^, Sqrt() •Trigonometric (Angle in Radians) oSin(), Cos(), Tan(), oSihn, Cosh, Tansh oArcSin(), ArcCos(), ArcTan2( ; ) 