Feature Highlights: 1. Easy Application – Simply place the Gas Level Indicator on a clean, flat area on the lower half of your gas cylinder. 2. Quick & Clear Reading – Turn on the gas and wait just 10 minutes for the indicator to display an accurate fuel level. 3. All‑Season Accuracy – The left bar activates in winter, the right bar in summer, so you get a reliable reading year‑round. 4. Safe & Reusable – Made from durable PET and soft magnetic material, it safely measures gas levels from -10°C to 120°C and can be used again and again. 5. Universal & Handy – Works on both LPG (propane) and butane cylinders. The magnetic backing lets you easily move it between tanks or exchange bottles. Product Details: This practical propane fuel gas tank indicator helps you monitor your gas supply accurately and avoid running out unexpectedly. It measures temperature changes in the cylinder to show exactly how much fuel is left, so you can use every bit of gas and save money. The strong magnetic back holds securely to metal surfaces, and no tools are needed—just stick it on and start reading. Perfect for grills, heaters, camp stoves, and home gas cylinders. Specifications: - Color: Black - Material: PET + Soft Magnetic - Size: 10 x 6.3 cm - Quantity: 3 Pieces - Measuring Range: -10°C to 120°C - Compatible with: LPG (propane) & butane cylinders Package Includes: 3 x Gas Level Indicator Note: Slight color variations may occur due to screen settings or lighting. Size tolerance is ±1‑3 cm. Only the listed items are included.