Well now, Mith, that's a pretty good list of possibilities you have there. I especially like:
</font><font color="blue" class="small">( A tool for forcing into small openings to see how far it will go in before it gets stuck )</font>
and since I have a variety of tools designed for this purpose, I woundn't be at all suprised if you were right, but it's the hole and the slot that have me wondering. If your suposition is correct, then these details must be used in some way for extraction. This of course implies that I have only part of a set -- the rest of the set being the tools used to engage the slot and hole for removal of said thingy from previously discussed small opening.
Cliff