Heavy duty 100% solid brass construction withstands weather, scratching, denting and corroding.This gauge provides an estimated reading rather than an exact measurement of when your propane tank will run out. It’s important to note that temperature affects pressure: in hot weather, pressure increases, while in cold weather, it decreases. As a result, the same quantity of propane may display varying levels on the gauge’s meter. This tool offers a convenient way to monitor your propane usage and plan refills accordingly, keeping you prepared for any season.