The ETA hand2mind 41847-32 plastic Safe Drawing Compass helps math students in grades 1 to 12 draw circles and angles, and measure length, and comes in a set of 32. The compass point allows precise drawing of circles, and its adjustable slide locks into place for accurate measurements. It provides customary US standard and metric measurements from 0 to 4.5"/0 to 11.5cm. Its plastic construction resists shattering.Science education products incorporate applied math and science principles into classroom and homeschool-based projects. Teachers in pre-K, elementary, and secondary classrooms use science education kits and products alongside science, technology, engineering, and math (STEM) curriculum to demonstrate STEM concepts and real-world applications through hands-on activities. Science education projects include a broad range of activities, such as practical experiments in engineering, aeronautics, robotics, energy, chemistry, physics, biology, and geology.ETA hand2mind develops math, science, and literacy learning materials for students in pre-kindergarten through grade 12 under the brands ETA/Cuisenaire, Hot Dots, Learning Resources, VersaTiles, and Natureblocks, among others. The company, founded in 1975, is headquartered in Vernon Hills, IL.