BIHUI 12 Line Laser Level — Full-Room Layout in Every Direction Tile layout lives or dies on your reference lines, and snapping chalk for a whole room is slow and imprecise. The BIHUI 12-line laser throws twelve 360° lines for complete horizontal and vertical layout control — floors, walls, and the planes in between — so you can set out a full room from one position. Self-leveling keeps the reference lines accurate even on uneven surfaces, so you're not fighting the tool. An adjustable base micro-tunes elevation and angle for exact placement, and it runs on a rechargeable lithium-ion battery (USB charging). For large-format layouts and complex rooms, it's the fast, accurate way to establish your lines and keep your tile running true. Why Tile Pros Choose It Full-room control: Twelve 360° lines for horizontal and vertical layout Self-leveling: Keeps lines accurate on uneven surfaces Fine adjustment: Adjustable base micro-tunes elevation and angle Rechargeable: Lithium-ion battery with USB charging Fast layout: Set out a whole room from one position Accurate tile runs: Keeps your courses true Pro tip: Let it self-level fully before you trust a line, and set it on a stable base or tripod so a bump doesn't shift your whole layout. Double-check critical reference lines against a known square corner.