"How much did that fish weigh? You'll never have to guess again with the Release Ruler Walleye Ruler. You'll find this patented device an indispensable tool for your fishing exploits, as it helps you keep a record of your catches through photographic reference. This is the only ruler that will both measure the length of your catch and provide a weight estimate based on scientific data, on the same device. Length markings are calibrated with bright color-coded weight brackets in contrasting colors, which makes for clear, no-bull photography; simply measure your fish, snap a photo with the ruler in place, and release. Durably fade-proof and tear-resistant, the lightweight Walleye Ruler is a cinch to stow and use. Measuring length: 36"". Never guess at a fish's weight again Measures your catch's precise length Provides instant weight estimate per scientific data Easy to read, see, and photograph Length and weight calibrated in bright contrasting colors Simply measure, photo, and release Helps you keep a photographic record of your catches Fade-proof and tear-resistant Measuring length: 36"""