Versatile usage across multiple fishing styles including raft fishing, sea fishing, lure casting, and trolling. Suitable for both freshwater and saltwater environments, allowing you to use a single tool for varied conditions. precision measurement for reliable tracking. Accurately measures line length and depth up to 999 meters with a three digit display. The large display window provides clear, easy to read numbers for precise control over line deployment. Minimized line slippage design for accurate results. The unique structure reduces line slippage to enhance measurement accuracy, ensuring every meter is recorded for dependable location tracking. Quick installation and removal for flexible setups. Features a quick release clamp on the back for fast attachment or removal from various fishing rods, offering strong compatibility with different rod configurations. Practical use scenarios Raft or kayak fishing in freshwater or coastal saltwater: monitor line length and depth to place baits or lures precisely and improve hit rates. Sea fishing with lure casting or trolling: track depth and line length to optimize lure depth and coverage while moving. Multirod setups on boats: rapidly switch between rods with the quick release clamp to minimize downtime and maintain accurate line management.