Heavy duty construction - Die-cast aluminum body provides durability and wear resistance, able to withstand harsh working conditions. Adjustable level - Features an adjustable level for precise calibrations, making accurate measurements easier across various applications. Versatile compatibility - Designed for round and rectangular bars; suitable for a range of tasks from track lighting installations to robotic instrument alignment. Large diameter level - Vial diameter of 7/8 inch for excellent visibility; sensitivity of 30 minutes per inch enhances ease of use in different lighting conditions. Use scenarios - Track lighting installations: align fixtures on curved or rectangular bars with confidence in level alignment. - Robotic instrument setup: ensure precise horizontal and vertical orientation on round or rectangular mounting bars. - General mounting tasks: level and align equipment on tubular frames or structural bars in workshops or labs.