Features 1、[Aluminum Alloy Rod Level] The standard rod level is made of aluminum alloy material, which is sturdy and hard wearing, can withstand harsh working conditions. 2、[Adjustable Vial] The grade rod level is equipped with adjustable vial, allows for precise calibration for accurate measurements in various applications. 3、[Versatile Design] This adjustable survey rod level is suitable for round and rectangular bars, suitable for various applications from track lighting to robotic instruments. 4、[Large Vial] With a 7/8 inch diameter large vial, provides high visibility and sensitivity of 30 minutes per inch, enhances usability in various lighting conditions. 5、[Long Lasting] Sturdy and robust enough, suitable for professionals requiring reliability and accuracy in demanding environments. Specification Item Type: Adjustable Grade Rod Level Material: Aluminum Alloy Color: Black Vial Diameter: Approx. 2.22cm / 7/8in Package List 1 x Adjustable Grade Rod Level 1 x Wrench