Scoring the antlers or horns of your trophy game animal has never been easier. The digital display walks you step-by-step through the measurement process, and by rolling the electronic wheel and stretching the electronic tape measure, the Rackulator automatically calculates seven final scores in different categories and systems with the push of a button. View your rack's gross and net tally in both typical and non-typical in all major scoring systems, including Safari Club International and Buckmasters Trophy Records. Also includes detailed scoring instructions for all major big-game animals. Runs on two AAA batteries (included).