Tell me about the HP 67

[Maximilian Hohmann]

Hello!

(12-02-2019 06:47 PM)Trond Wrote:  So, I noticed that some people have talked about polishing the display. My 67 could perhaps benefit from this. Is this risky (i.e. damage to the calculator) or relatively straightforward?

There is no risk as long as you use some mild polishing paste which does not contain solvents. I use a product called polyWatch for that purpose. It can be found cheaply on the internet and one small tube is good for dozens of calculator (and watch) displays. It is not "strong" enough to remove deep scratches.

Regards
Max