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Default Residential Propane Gauges- How well do they work?

Its a float gauge basically...

A long brass rod with a float on the end of it...as the level of liquid
in the tank rises or falls the float rises or falls. At the gauge end
of the float there is small gear which meshes with a larger gear on the
part of the guage that mounts to the tank. They do stick
occasionally....
what gets them is hauling the tnk to a new location with gas in
it....there are no baffles in the tank and they will haul them with gas
in them..forget the legal percentage that can be hauled ( think its 5
%) but I worked in prorane for a while years and years ago and we would
haul them with 50 percent or more...depending on the time of year,
situation etc.... anyhow...like any mechanical joint they break and can
get bound up or loose...depending on what kind of movement they see in
the tank. Expensive to replace...got to pump out the propane then
replace the gauge and then refill the tank...