For working in environments where you cannot or do not want to use a computer, a microscope with a direct TV or VGA connection might be the best solution. The Dino Lite series with a VGA connecter can be plugged directly into a computer monitor.
AM4116TL: Direct VGA connection, Continous - 10x - 90x, Long working distance: 4-15cm. Ideal model for working under the microscope(i.e. repair/precision assembly tasks)