> ## Documentation Index
> Fetch the complete documentation index at: https://support.lumafield.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Direct Dimensions

> Distance, Angle, and Diameter measurements on extracted or authored features in Dimensioning Mode

Direct Dimensions measure size and separation between features in a [feature set](/voyager/voyager-feature-extraction). They are not GD\&T controls. [Flatness](/voyager/voyager-flatness) and [Cylindricity](/voyager/voyager-cylindricity) describe form. [Position](/voyager/voyager-position), [Perpendicularity](/voyager/voyager-perpendicularity), and [Parallelism](/voyager/voyager-parallelism) describe location and orientation in a datum frame. Distance, Angle, and Diameter describe a number between features, with a tolerance band around that number.

A tolerance is **Symmetric** (± one value), **Unilateral** (an upper and a lower, such as `+0/−0.1`), or **Limit** (a minimum and a maximum). Leader and label placement can be changed after the measurement exists. The number does not change.

The tools are in [Dimensioning Mode](/voyager/voyager-modes#dimensioning-mode) once a feature set exists. Features [authored by hand](/voyager/voyager-manual-feature-authoring) are measured the same way as extracted ones. A distance or an angle between two planes does not require the volume to be rotated onto a drawing. Rotate an [ROI](/voyager/voyager-region-of-interest#4-orientation) when you need the part's own axes before you pick the features.

<h2 id="distance">
  Distance
</h2>

The Distance Tool measures between two extracted or authored features. The supported feature pairs and methods today are:

* **Plane to Plane** — Center to Center, Max Perpendicular, Min Perpendicular, Mid Perpendicular
* **Plane to Cylinder** — Center to Center, Centroid
* **Cylinder to Cylinder** — Center to Center, Centroid

<Frame>
  ![Using the Distance Tool to measure the maximum perpendicular distance between two planes](https://lumafield-support-assets.s3.us-east-1.amazonaws.com/distance.gif)
</Frame>

<h3 id="distance-workflow">
  Workflow
</h3>

<Steps>
  <Step title="Select the Distance Tool">
    Choose **Distance** from the Toolbar in Dimensioning Mode.
  </Step>

  <Step title="Pick two features">
    Click the first feature in the Viewport, then click the second. Eligible features highlight on hover so you know which surfaces are available.
  </Step>

  <Step title="Choose method and tolerance">
    Pick a method from the dropdown in the Workflow Editor (the available methods depend on the feature pair you selected) and enter a tolerance.
  </Step>

  <Step title="Submit">
    Submit to compute the dimension. The result is added to the scene with a leader line and a tolerance-aware color code.
  </Step>
</Steps>

<Note>
  The supported method matrix is actively being extended. Reach out to Lumafield to share dimensional requirements that aren't yet covered.
</Note>

<h2 id="angle">
  Angle
</h2>

The Angle Tool measures the angle between two features. Supported pairs:

* **Plane to Plane**
* **Plane to Cylinder**
* **Cylinder to Cylinder**

<Frame>
  ![Using the Angle Tool to measure the angle between two planes](https://lumafield-support-assets.s3.us-east-1.amazonaws.com/angle.gif)
</Frame>

<h3 id="angle-workflow">
  Workflow
</h3>

<Steps>
  <Step title="Select the Angle Tool">
    Choose **Angle** from the Toolbar.
  </Step>

  <Step title="Pick two features">
    Select the two features whose included angle you want to evaluate.
  </Step>

  <Step title="Add tolerance and submit">
    Enter the tolerance and submit. The angle and pass/fail state appear in the dimension label.
  </Step>
</Steps>

<h2 id="diameter">
  Diameter
</h2>

The Diameter Tool measures the diameter of any extracted or authored cylinder. This is the simplest of the Direct Dimensions Tools — point and select.

<Frame>
  ![Using the Diameter Tool to measure the diameter of a cylindrical feature](https://lumafield-support-assets.s3.us-east-1.amazonaws.com/diameter2.gif)
</Frame>

<h3 id="diameter-workflow">
  Workflow
</h3>

<Steps>
  <Step title="Select the Diameter Tool">
    Choose **Diameter** from the Toolbar.
  </Step>

  <Step title="Pick a cylinder">
    Click an extracted or authored cylindrical feature.
  </Step>

  <Step title="Add tolerance and submit">
    Enter the tolerance and submit.
  </Step>
</Steps>

<h2 id="tolerance">
  Tolerance and pass/fail color coding
</h2>

Every Direct Dimension supports a tolerance. Choose **Symmetric**, **Unilateral**, or **Limit** in the panel. Unilateral takes **Upper (+)** and **Lower (−)**. Limit takes **Min** and **Max**. When a tolerance is set:

* The dimension label is **green** when the measurement is within tolerance.
* The dimension label is **red** when the measurement is out of tolerance.

Tolerance values can be modified after the measurement is completed — open the dimension in the Attributes Panel to update the value or method, and the color coding updates immediately. This makes it easy to iterate on tolerances without re-running the workflow.

<h2 id="adjusting-leaders">
  Adjusting leaders and labels
</h2>

Once a Direct Dimension is created, use the leader and label controls in the Attributes Panel to adjust orientation and offset. This keeps complex scenes with many dimensions easy to read and helps when preparing Bookmarks, Renders, and Animations in [Reporting Mode](/voyager/voyager-modes#reporting-mode).

<h2 id="related-pages">
  Related pages
</h2>

* [3D Auto-Dimensioning](/voyager/voyager-auto-dimensioning) — Feature Set setup
* [Feature Extraction](/voyager/voyager-feature-extraction)
* [Manual Feature Authoring](/voyager/voyager-manual-feature-authoring)
* [Flatness](/voyager/voyager-flatness)
* [Cylindricity](/voyager/voyager-cylindricity)
* [Datum Definition](/voyager/voyager-datums)
* [Profile](/voyager/voyager-profile)
* [Position](/voyager/voyager-position)
* [Voyager Modes](/voyager/voyager-modes)
* [Voyager 2.0 Release Notes](/platform/voyager-release-notes) and [Monthly Highlights](/platform/monthly-highlights)


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