Running out of propane gas, just as hungry friends gather around your grill, is a hassle. To keep tempers from flaring some gas grills come with a fuel gauge but if yours didn't, you can buy one.

If you're someone who uses propane gas while on camping trips or at tailgates, it can feel like a guessing game to know if you have enough propane left in the tank, or whether you need a new one. Well ...