> For the complete documentation index, see [llms.txt](https://docs.siminsights.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.siminsights.com/hyperskill-studio-authoring/virtual-entities/special-virtual-objects/digital-caliper.md).

# Digital Caliper

The digital caliper lets users in VR measure objects in their virtual space. This feature is VR exclusive.

## Add a digital caliper

Drag and drop the 'Digital Caliper' virtual object into the experience.

<figure><img src="https://2704613365-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FxYaaXoZ4YGbVdAnAhdcE%2Fuploads%2FTUDONI2NXTk9hRNtU1Fm%2Fimage.png?alt=media&#x26;token=d39a0318-ac0a-43f8-934d-98e966905671" alt=""><figcaption></figcaption></figure>

## Controls

While the user is holding the caliper in VR:

* Use the joystick to move the caliper jaw up or down. The jaw stops moving if it is touching something.
* Press the trigger button to switch between 'Millimeters' and 'Inches'.