I'm interested in the answer to this question as well. I see there are gauges that measure by the weight of the tank and others that fit an adapter between the tank and the supply line. I'm not sure which type will work best and/or which one will fit best, given the storage container of the propane tank. Thanks for asking the question!
I just attached this gauge which easily tells me the propane level without having to pull the tank and weigh/shake/guess the tank level after each trip. Found it on trailer.com.
CAM59023
Camco Propane Cylinder Gas Gauge and Leak Detector
Have one of those myself - seems to be not quite as accurate when on the low side. It's temp sensitive so a temp change can all of a sudden drop it and you're out before you thought you'd be.
The gauge has HOT and COLD ranges but true temp correlation would be helpful. We have gauges on our fire bottles in the planes that have temp ranges clearly marked, but the problem would be variation of pressure which would render true tank levels impossible.
When the the gauge is halfway I swap it out and put the used tank on my grill or flame pit. No fun running out, but we do bring a small propane stove and a mini grill and charcoal for those times.
Glenn & Annie 2016 T@B CS-S Max Black on Silver 2013 Toyota Tacoma V6
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2021 T@B 320S Boondock “The T@B”
Towed by a white 2019 Ford F-150 4x4 Supercab, 3.5L V6 Ecoboost “The Truck”
2016 T@B CS-S Max Black on Silver
2013 Toyota Tacoma V6
When the the gauge is halfway I swap it out and put the used tank on my grill or flame pit. No fun running out, but we do bring a small propane stove and a mini grill and charcoal for those times.
2016 T@B CS-S Max Black on Silver
2013 Toyota Tacoma V6