> For the complete documentation index, see [llms.txt](https://datashapes.gitbook.io/primer/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://datashapes.gitbook.io/primer/revit/document.lengthdisplayunit.md).

# Document.LengthDisplayUnit

## 1. Description

This node returns display units and unit symbols for lengths in current document. 

![](/files/-LVrrtMjqT-1tqVx2SC4)

## 2. Outputs

* **LengthDisplayUnits**

This output retrieves the display units of the current project.

* **LengthDisplayUnitsSymbol**

This output retrieves the display unit symbols used in the project.

![](/files/-LVrtUA0XAcU1S-PwVVx)