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by metadat 731 days ago
Why is the pressure gauge full of liquid? (Presumably water? but why / how?)

Quite the talker there :)

Edit: Got it Shog9, thanks!
1 comments
Shog9 731 days ago
Probably not water. Purpose is to dampen vibration, making the needle easier to read and possibly protecting the mechanism a bit. https://tameson.com/pages/liquid-filled-pressure-gauge
link