One half of an old school Battleship game?

No.

Creative guess, but no.

I am not going to drop hints just yet, but will describe it better by telling you what it doesn't have. It uses no power and has no hidden parts. You can see it all there except the printed label on the lid, which is covered up. The label has the name of the item, instructions on its use and the manufacturers name and info on it.

Ha ha, no.

Some kind of compass.

That is a fairly accurate description, but what is it?

No.

Is it some type of surveying device? It looks like the squares could be used to aid in plotting or mapping things... maybe?

The fuck is that thing?