Joe, this is what I've been doing so far.
Originally Posted by Joe Symchyshyn
But it feels awkward to do so after a while, and I would like to be able to see the whole negative (or most of it) at the same time.
Since I am a bit on a budget, on some catalogue I have found a few very cheap "general purpose" loupes (I don't think they are strictly targeted to the photographer, but more to somebody who works on tiny objects like clocks, etc... ) And they are available at those magnifications that I have mentioned before.
From your contributions, 4X seems to be a good starting point, while I guess that for a 10X the optical quality should be more critical.