Zooms in or out from the model using keyboard and keypad keys.
Click Home > Operators > Zoom .
On your keyboard, use the Plus (+) keys to zoom in, and use the Minus (-) keys to zoom out.
Other shortcut zoom operations include:
With the Zoom command selected, drag the mouse forward to zoom in and backward to zoom out.
Scroll the mouse wheel. This zoom operation moves in on the location of the cursor in the main window rather than zooming to the center point of the model. This operation is also available when using the Orbit, Turntable Orbit, and Pan commands.