1. Tank adapter - Polished finish for a smooth, safe grip; protects hands from injury - Easy to use and install with straightforward operation - Lightweight and portable; convenient to store and transport - Includes a bottle fill level indicator to monitor liquid levels 2. Gas fill level indicator - Manometer detects potential leaks and provides real-time status - Reads fill level via an external color-coded dial for quick assessment - Acts as a gas refill adapter to simplify gas cylinder maintenance 3. Propane tank capacity gauge - Made from high-quality copper material for durability - Durable and practical for regular use with propane tanks - Compatible with gas cylinder adapters to support reliable performance 4. Cylinder pressure gauge - Brass construction emphasizes good workmanship and reliability - Robust and long-lasting for extended service life - Provides an accurate gas pressure indication for safe operation Use scenarios - Home grilling and outdoor cooking: connect to propane cylinders, monitor fill levels and pressure to ensure safe, uninterrupted operation - Outdoor camping or tailgating: portable setup that helps you check tank capacity and detect leaks while on the go - Workshop or service tasks: perform safe gas handling, leak checks, and pressure monitoring during maintenance or installation of gas systems This set delivers a safe, user-friendly solution for monitoring propane tanks and gas cylinders, combining durable materials with clear indicators to support reliable performance.