You can use Instant2D to dynamically manipulate sketch dimensions in sketch mode. You can click a dimension and quickly edit its values without clicking Rebuild to reset the geometry.
With the enhanced
Instant2D 
you can:
- View the dimension handles or Instant2D Rulers
while selecting dimensions in sketch mode.
- Edit dimensions for any dimension type in the dimension input value box by clicking a dimension value.
Instant2D in sketch mode is available for 2D and 3D sketches.
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Instant2D Rulers |
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Dimension input value box |