Features a powerful magnet base that securely attaches to ceiling joists for stable measurements, enhancing work efficiency during construction and tiling projects The unique octagonal design enhanced stability during use, slips or falls for safe operate Made from ABS for long lasting durability, suitable for different construction environments and frequent use Provides clear double sided markings for versatile measuring applications, simplifying process and improving operational convenience Equipped with two levels bubble (base and top) for precisely horizontal measurements, ensuring accuracy in various renovation tasks, Manufacturer: SHINLHUA