Use the Ruler
The Ruler measures the distance between two points. Use it to display the distance between elements in the Viewer.
- From the Tools Section, click Ruler.
- Select the Enable checkbox.
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For the Start point, select the item to link to.
You can link to a particle, a geometry, or manually define a point in space.
- Select Link To Particle to link to a particle.
- Click Pick Particle to change the cursor to a cross-hair.
- Click on a particle in the Viewer to select the particle to link to.
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Repeat the same steps to set the End point.
Note: The current distance between the two points is displayed at the bottom of the Tools tab.