So last weekend I was up in the mountains shooting my gauntlet .30. I stopped to fill my tank with my portable compressor. After filling I noticed a single small crack in the glass of the gauge on the tank. (I filled it to a little over 4k) I’ve never dropped it or banged it against something, my only guess is it could’ve been the cold? (It was probably high 30’s low 40’s °F) Tonight I was looking at it and I have MANY small cracks
picture doesn’t really do it justice. Has this ever happened to you? Should I be concerned or replace immediately? Any input would be greatly appreciated

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