only the top DIY minds need apply

[spypet]

OK, new question for all you geniuses!

can you think of a common household or utility item that's cheap
and easily available, that will work like a tank's surface water viewer;



my first thought was to find a typical laboratory beaker or vase,
but it's hard to find something wide with a clear flat glass bottom.



in addition, what items would make it all work outside in the sun
without having to endure a lot of reflection from the sky above.



is there some knick name, or vernacular term used for this item,
that would help me google around for other items like I described?

[Ukrainetz]

Beaker is what I'd go with. Paint the sides black, and get up close to the opening, or use an umbrella . However a flask would be a better seal if you're only using one eye

[Naja002]

Still got that mask?

[Ukrainetz]

9.99 at wallmart