✅ SOLVED Help with odd brass key.

[vhs07]

Anyone seen one of these before? It's very thin and made of brass. Says ...UAMETER and NON MAGNETIC. All I could think of is Aquameter?
Back is plain. Found on a beach in Seadrift, Texas. Whatever it was made to adjust would have to turn smoothly, or else this would bend without much pressure. Thanks

 

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[Doubter in MD]

I think it's a flat head screw driver you would keep on your key fob. But that is just a wild guess.

 

[TommyB]

Looks like some kind of key ring screw driver. Something about a "meter" stamped on key. Possibly to be used to adjust some kind of meter
that requires non-metallic tool for proper adjustment?

 

[trdking]

plain old keychain screwdriver. Fun stuff

 

[AlabamaRelic]

Aquameter compass key.

 

[ARC]

Agreed with Alabama

 

[Doubter in MD]

Aquameter compass key.

That makes sense.

 

[vhs07]

Thanks AlabamaRelic, Looks like it was to calibrate a Aquameter compass from magnetic north to true north on a boat.