EISCO digital timer is used to clock classroom or laboratory activities, and is operated with three keys for ease of use: Lap, Stop/Start, and On/Reset. The timer?s display reads in hours, minutes, seconds, and hundredths of seconds for precise measurement, and its Lap key can be used for tracking elapsed time while the timer continues to run. The timer is a bright red color for visual identification, and measures 2.0 x 2.0 x 7/16 inches (L x H x W). (L is length, the horizontal distance from left to right; H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from front to back.) The timer runs on one lithium button battery, such as a G10-A or similar battery (sold separately), and is suitable for all grades and ages.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.EISCO Scientific manufactures and supplies lab equipment for education and industry. The company, founded in 1968 and headquartered in Rochester, NY, meets International Organization of Standardization (ISO) standard 9001: 2000.