I bought the CB350 microfiches when I started my resto, thinking it will be easy to buy a handheld reader. It turned out that it was easier to buy the actual parts manual than a handheld reader, so I just kept it as another of my "Honda" memorabilia.
FWIW, we have in the office a very modern copier. I have copied the shop manuals of all my bikes in such a way that there are two pages per page (half size) and the parts manual in a way that there are 4 pages per page. Not only this save me space (so I got all my originals to storage outside my appartment), but also I put every single sheet inside one of those punched plastic sleeves, so no problem with dirty fingerprints anymore.
Raul