Linda,

Amway used to make a rust remover.  I think they still make one under a
different name.  It is a bit acidic so temper the mixture with a bit of
baking soda.

Tom E.

> Hi, Everyone!
>        Thanks for the info on calipers.
>
>        Now I have a new problem - how can I get rust off a small shell.
Some exhibits ago, I mounted some miniatures on pins to make them more
visible.  Unfortunately, some of the pins rusted.  I have a golden yellow
Stomatolina rubra (Lamarck, 1822) that I want to mrescue!
>
>                         Thanks again,
>                                 Linda
>