---
title: "Take measurements and change precision"
url: "https://help.cadchat.com/en/article/take-measurements-and-change-precision"
language: "en"
last_updated: "2026-07-12T23:20:40.555Z"
---

# Take measurements and change precision

Use the measurement tool to measure distances on a 3D model and set precision in Space Settings.

## Take a measurement

Open a space and click the **3D Canvas** tab. Make sure a model is loaded — see Upload a 3D model file to a space if needed.

1\. In the left toolbar, click the **Add Measurement** icon (ruler icon, second from top).  
2\. Click a point on the model, then click a second point to place a measurement line.  
3\. The measured distance displays on the canvas.

You can place multiple measurements on the same model. Measurements are visible to all collaborators in real time.

![](https://cdn-assets.productfruits.com/3be5574d-cc21-4e11-82f1-49490db2004c)

* * *

## Change measurement precision

Precision is a space-wide setting that applies to all collaborators. The default is .001.

1.  Click the gear icon in the space header and select **Space Settings**.
2.  Click the **Measurements** tab.
3.  Adjust the **Precision** spinner to your preferred decimal precision.

Precision changes affect all existing and new measurements in the space. See [Space settings overview](https://help.cadchat.com/en/article/space-settings-overview) for more on Space Settings.

![](https://cdn-assets.productfruits.com/e9ec91b7-e020-4616-a20b-4aeda6ebc7ad)

* * *

## Tips and edge cases

-   If the measurement tool isn't responding, make sure a 3D model is loaded in the space.
-   If measurement values look incorrect, check that the model was uploaded with the correct unit scale.
-   Coordinate with your team before changing precision, it affects everyone in the space.

* * *

## Related articles

-   [Space settings overview](https://help.cadchat.com/en/article/space-settings-overview)
-   [Work with the 3D canvas](https://help.cadchat.com/en/article/work-with-the-3d-canvas)
-   [Use the 3D viewer tools](https://help.cadchat.com/en/article/use-3d-viewer-tools)