Size: 10 x 6.2 cm x 0.1 cm (3.94' x 2.44' x 0.04') This product safely and accurately measures cylinder capacity using a liquid crystal indicator. It operates across a temperature range of 10 C to 120 C and will clearly show you when the content is running low before you run out. How it works and use Attach this indicator to your gas cylinder and it will display the remaining content. Simple, direct reading helps you plan before you run out. Key attributes Function: Capacity measurement with a temperaturebased indicator Compatibility: Designed for standard gas cylinders Size: 10 x 6.2 cm x 0.1 cm (3.94' x 2.44' x 0.04') Material: PET plastic liquid crystal soft components Performance: Reliable reading from 10 C to 120 C Use scenarios Camping or outdoor cooking with portable gas cylinders Home grilling or cooking with propane/butane cylinders Emergency prep and uptime planning for gas cylinder use Notes Constructed with PET plastic, liquid crystal, and soft materials for a lightweight, durable gauge.