Get precise measurements every time with this Ketch scientific fish measuring board. It's made from extruded aluminum with high-contrast, laser-etched markings for every millimeter – so the numbers won't ever wear off. The board is 800mm long (about 32 inches) and has contoured sides to cradle fish securely while you measure. It's designed for scientists, biologists, or serious anglers who need accurate field or lab data. And because it's made 100% in the USA, you know it's built tough. One thing to note: it doesn't float, so keep a grip on it near water. A reliable, no-nonsense tool for fisheries work.