When you're out on the water and you snag a particularly enviable fish, you might take a quick picture of yourself holding it. If you have a signal you might even post that picture to social media. The problem there, if you're going to brag with specificity, would be giving the details of the catch.
A simple ruler would be enough to share the length, but in most scenarios weight is just as important, if not a more important bragging point. The Fishing Friend Digital Scale is small enough to fit in your pocket but can measure objects weighing up to 40Kg/88Lb, making it good for ocean trips.