If you work on old computers, you can't beat the practicality of a 15-inch 4:3 aspect ratio LCD monitor, especially now that they're so cheap, or even free.
Demo clips used:
GoatHerderEd - "Computer Labels":
https://www.youtube.com/watch?v=dTJaOa8npVA
Joey and Freddy (a.k.a. Nick & Eddie Going) - no longer on YouTube, but their channel still is:
https://www.youtube.com/watch?v=52Z3TlJAx2o
NCIX Tech Tips - "Xbox One launch, AC 4 IS PC optimized, and Bitcoins in Space! - Netlinked Daily FRIDAY EDITION":
https://www.youtube.com/watch?v=5PxcvYXNlWw