1. Adjustable Length for Versatile UseFeaturing an innovative telescopic structure, this level can easily slide to any desired width, making it a fit for various sizes of hanging brackets. Additionally, it is equipped with a locking mechanism for convenient and precise measurement, significantly improving installation efficiency. It is a valuable tool for both professional installers and DIY enthusiasts. 2. **Precise Display**: The horizontal bubble vial is clear, allowing you to easily read alignment under any lighting conditions. The drilling position can be accurately marked on the hanging board, ensuring a worry installation. 3. **Precision Positioning**: The adjustable level is supported by two locking slots, securing your installation and ensuring precise positioning during setup. This allows your air conditioner to be installed stepbystep without requiring repeated recalibration. 4. **Adjustable Length**: The innovative telescopic structure allows it to slide effortlessly to any width you need, accommodating various sizes. Equipped with a locking device, it achieves convenient and accurate measurement, greatly enhancing installation efficiency.