The Zoom Selection command is used to zoom in on the selected part of the drawing.
Location of Zoom Selection Command
You can access it from the ribbon menu, View tab, Zoom title.
Click the Zoom Selection icon.
Select the object or objects to zoom in.
Complete the selection process by clicking the right mouse button.
The view will zoom in to the selected object or objects.
Before zoom selection
Selecting objects to zoom in
After zoom selection