The Square Laser Level is a leveling tool designed for professional use. It projects two extended 90-degree laser lines to assist with alignment. Instructions: Project 90-degree laser beams onto surfaces for home decor, woodworking, trim, and tile layout. A double horizontal bubble system provides precise flat or straight alignment. A retrievable I-beam remains stationary for straight-line work. Applications: Suitable for flooring, tile design, paneling, wallpapering, formwork, wall cladding, joinery finishes, and electrical fixture layout. Includes: device with on/off switch and 2 suction cups. Function: Projects two lines at a 90-degree angle onto floors for surface design with tile, stone, brick, carpet, or hardwood. Provides an alignment guide for 90-degree layouts with 5-degree incremental rotation. Features one-touch operation. Two suction cups allow for stable mounting on surfaces. Specifications: Material: ABS. Colour: Blue. Laser wavelength: 650nm. Laser class: II. Dust/waterproof rating: IP-54. Accuracy: +/- 3/8" per 100ft (+/- 1.5mm per 5m). Self-leveling range: +/- 4 degrees. Power: 3 x AA alkaline batteries (not included). Low voltage indicator: flashing power LED. Product dimensions: approximately 190 x 135 x 135 mm (7.48 x 5.31 x 5.31 in). Package weight: approximately 182 g. Package contains: 1 x 90-degree laser level.