There's no more guessing games on how much you've got left in your propane tank. This Propane Tank Gauge allows you to see how much propane fuel you have left in an instant without removing the tank. It’s a small, compact design ready to use right out of the packaging with grills, boats, heaters, smokers, camping stoves, fire pit tables, turkey fryers, RVs, and all propane appliances with Type 1 connections. It can withstand weather, scratching, denting, and corroding. The emergency flow control, automatic leak detector, and color analog gauge make it safe and simple to use. Each gauge features three indicator levels labeled Refill, Low Gas, and Gas to ensure easy and accurate readings each time. With solid brass fittings, this propane tank gauge is heavy duty, ensuring a hassle free, tight connection. It's also easy to install without any tools; tighten the gauge with your hands. Measures propane level on appliances with Type 1 connection For grills, boating and RVs Emergency flow control and automatic shutoff leak detector