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emf · 09-13-2017, 07:11 AM

The gauge has ether in the bulb at the end which expands at a known linear rate as the temperature increases. The gauge itself is a pressure gauge with the dial calibrated in degrees.

Frank

09-13-2017, 07:11 AM	#9
emf Senior Member Join Date: Mar 2013 Location: Hudson, NY Posts: 511	Re: How does water temperature gauge work? The gauge has ether in the bulb at the end which expands at a known linear rate as the temperature increases. The gauge itself is a pressure gauge with the dial calibrated in degrees. Frank