The Size Matters Fish Ruler is a reliable tool for accurate and safe measurement of trophy fish, combining functionality, safety and ease of use. Thanks to its rigid design and a special limiter at the zero mark, the instrument provides the most reliable measurement results. The compact size when folded makes it easy to place the ruler in a fishing box or in a boat without taking up extra space. The modern approach to trophy evaluation is increasingly based on measuring the length rather than the weight of the fish. This method significantly reduces the likelihood of harm to fish, which is especially important for anglers who practice the catch-and-release principle.