The Laser Technology Impulse 200XL Laser Rangefinders are much more than just rangefinders.The Laser Technology Impulse Range-finders line comes with on-board solutions for height, horizontal and vertical distance; distance between two in-line objects; and cumulative distance for perimeter applications.These reflectorless lasers are specifically designed for optimal performance under whatever conditions you might encounter in the field. They are lightweight, extremely rugged, completely waterproof and versatile. Use them as a handheld unit or mount them on a tripod for added stability.