> For the complete documentation index, see [llms.txt](https://help.qonic.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.qonic.com/documentation/qonic-application/measure-and-quality/measure.md). # Measure Measure the shortest distance or the angle between entities, subentities or points, or the lowest and highest level of a selection Under the *Measure* icon, click *Measure.* By default, Object mode is active. Select two entities in the model. The shortest distance between these entities will be displayed.
Enable the *Vertical* mode in the command center. Now the shortest vertical distance between the two selected entities will be displayed.
Select another entity. This new entity will now be checked against the entity you selected *last*. You can not have more than two entities selected during this procedure, so the first selected entity will automatically be unselected. It is also possible to measure the shortest distance between *sub*entities, i.e. faces, edges and vertices. To do this, enable [Deep Select](/documentation/qonic-application/basics/navigation-and-selection/select-mode.md#deep-select) mode and click the faces, edges and/or vertices you want to measure the distance between. Your selection can be a mix of any of these (sub)entities.
Enabling the Angle option will display the angle between two planar faces, two linear edges or a face and an edge. This mode only works with faces and edges, so Deep Select will be automatically enabled.
Enabling the Height option will display the lowest and highest level of your selection, as the Z coordinates **Lowest Z** and **Highest Z**. Unlike the other options, Height works on any number of selected entities: the measurement always covers the whole selection. In the model, a marker beside the selection indicates each level. To measure the levels of specific faces, edges or vertices instead of whole entities, enable [Deep Select](/documentation/qonic-application/basics/navigation-and-selection/select-mode.md#deep-select) mode.
Switching to Points mode allows you to click any point in your model and find the shortest distance between these points. Click more points to add this to the chain and find the respective distances as well as angles between two subsequent sets of points.
Click the XYZ option to break down these distances in their X, Y and Z components.
{% hint style="info" %} Distances are displayed in the length unit of the project, and angles in degrees. Project owners can change the length unit in the [project units](/documentation/qonic-dashboard/projects.md#project-units). {% endhint %}