Material: plastic Concentrated, customer-friendly benefits and features - Convenient calculation: accurately calculates the length of your fishing line, helping you avoid waste and ensure you have enough line for every fishing trip. Compatible with a fishing line winding machine and a line spooler for fishing reels. - Accurate line measurement: ensures precise calculation of fishing line length, preventing both overuse and underuse, and optimizing your fishing experience. Works with fishing gear displays and a fishing line remover. - Track line usage: provides accurate measurements of the fishing line used, helping you manage your line length and your fishing efficiency. Includes line counter reels for fishing trolling and a fishing line depth counter. - Precise usage tracking: provides accurate measurements of fishing line used each time, ensuring you can track and manage your line usage. Includes a scale for fishing and a fish line counter for spooling. - Practical and reliable: designed to support consistent line management across trips, spooling sessions, and routine maintenance, with tools and displays that help you plan and execute line usage effectively. 2-3 use scenarios - Scenario 1: Pre-trip line setup. When preparing multiple reels for a day of fishing, use the device to measure and wind exact line lengths, ensuring each reel has the correct amount and reducing waste. - Scenario 2: On-water line management. While trolling or depth-fishing, rely on the line counter reels and depth counter to monitor line usage and line depth, helping you optimize setup and efficiency without guesswork. - Scenario 3: Post-trip maintenance. After a trip, review precise line usage across sessions to plan re-spooling or line replacement, keeping your gear ready for the next outing and minimizing unused leftover line.