Self leveling compensator with transport lock — protects pendulum against damage and loss of calibration, Large aperture 32x-power lens — allows more light for a sharper image and excellent magnification, Weather resistant design IP54, Solid metal base and three precision leveling screws provides stability in all weather for precision leveling, Both horizontal/vertical Crosshairs and Stadia lines measures level and alignment and estimates distance, Top mount quick sight — for quick sighting of leveling rod, Circular bubble vial with 90-degree prism — for easy, fast set-up