# Measure a 3D model

You can measure a 3D model only if the PDF creator enables the functionality for Reader users.

1. Select the 3D model, and then click the 3D Measurement tool .
2. Move the pointer over the model to start measuring. For example, click on an edge to measure its length.

The 3D Measurement Tool is set to automatically display the most likely measurement, but you can choose a different measurement type.

Related Information

- View movies, sounds, and 3D models