I’m monitoring a few machines and would like to view the results on a large screen. Can I modify the row height to make the results fill the screen?

Yes.
To do so, just click and drag the border between the row headers. All the rows will be adjusted to match the height you selected, so that you can stretch your rows to fill the screen or squeeze them to fit more data. Also, don’t forget the Full Screen mode, designed especially for control room displays – just hit F11 and switch to full screen mode.