Connect GasWatch’s TLV 212 propane-level indicator between your propane tank and your grill’s regulator and you’ll never have to wonder, “Do I have enough gas for the party?” And it’s not just for your grill — it’ll work on all outdoor propane-burning equipment with a QCC Type I connection. In other words, if you can hook your 20lb propane tank to it, you can use the gauge.
With this UL-listed tool you can safely monitor tanks up to 40lbs by referencing the easy-to-read colored dial. GasWatch also incorporates a leak detector and emergency flow limiter into their product.
Sick of weighing my tank before big events to make sure I had enough gas, I bought one of these gauges after I purchased my new grill. You detect leaks by watching if the gauge drops when you shut off the tank. Luckily the opportunity hasn’t arisen to watch the emergency flow limiter in action, but otherwise it seems to indicate the propane level correctly.