Old Pressure Gauge Cleaning?

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rds4640

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I have a nice old Uwatec pressure gauge that is slightly fogged on the Inside glass. Does anyone know a goog way to clean it without ruining the gauge?
 
I had an old gauge with fogged up glass. One day I turned on the air pressure and it didn't register. I hit it against my palm and the needle fell off.
 
If it's fogged up any then it's got a leak around the seal on the glass. It's only a matter of time before it corrodes, especially in salt water. It will fail.

You might as well replace it before it fails while you're on a dive.
 
https://www.shearwater.com/products/swift/

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