Tekzilla Daily Tip #38: Zoom Your View in OS X
If you're needing a bigger view of something in OS X but don't want to change the font or screen resolution just use the built in zoom function. Just hold down the [CTRL] key and scroll up or down with the mouse scroll wheel. Scroll up to zoom in and scroll down to zoom out. To move the screen around while zoomed simply move the mouse cursor in the direction you wish to view.