Durable construction for long lasting use The product is made from a material chosen for durability, helping it withstand routine field and use without compromising performance. Clearly visible horizontal bubble The universal horizontal bubble is clearly visible, allowing quick and accurate leveling in a variety of setups. Compact size Size: 85 mm (3.35 inches), providing a compact profile that is easy to handle and install without adding bulk to your workflow. Broad compatibility Fits on round and rectangular grade rods, offering versatile compatibility with common surveying and leveling equipment. Reliable performance Designed to deliver stable, easy to read leveling data in typical working conditions, helping you achieve consistent results. 23 practical use scenarios Surveying and construction: mount on a grade rod to verify level during stakeout or instrument setup, improving accuracy and speed on site. Equipment installation: use on rounds or rectangular rods to align machinery, rails, or fixtures during installation or alignment tasks. Laboratory or workshop: place on a bench or instrument stand to check the level of equipment and ensure stable operation. Specifications recap Material: durable for long lasting use Bubble: universal horizontal, clearly visible Size: 85 mm (3.35 inches) Compatibility: round or rectangular grade rods Performance: reliable leveling readings in typical conditions