1Applicable Range: This leveling tool is suitable for round and square rods with a diameter of 11.25 inch, and portable level bubble is also suitable for tower ruler. 2Adjustable Bottle: There is an adjustable small bottle at the top for easy viewing, with a sensitivity of 40 minutes to ensure accurate and reliable operation. 3Aluminum Material: The rod level tool is made of excellent aluminum material, with high strength, corrosion resistance, and a protection cover to prevent scratches. 4For Leveling Work: This portable pole bubble level is suitable for various leveling work, such as home decoration, factory mechanical equipment adjustment, etc. 5Compact Structure: This adjustable grade rod level is lightweight and compact, easy to install, and takes up little space, making it easy to use anytime, anywhere. 1 x Pole Bubble Level