---
title: physicalSize
framework: arkit
role: symbol
role_heading: Instance Property
path: arkit/referenceimage/physicalsize
---

# physicalSize

The size, in meters, of a reference image in the real world.

## Declaration

```swift
var physicalSize: CGSize { get }
```

## Discussion

Discussion For example, set the physicalSize of a reference image of a yard stick to 0.9144 meters.

## See Also

### Inspecting a reference image

- [name](arkit/referenceimage/name.md)
- [resourceGroupName](arkit/referenceimage/resourcegroupname.md)
- [description](arkit/referenceimage/description.md)