The sliding laser guide makes aligning stamps, handwriting, and embellishments quick and easy. Perfect for card making, hand lettering, and so much more. It has a 6 x 6.5 inch working space with measurements in inches and metric. Requires one 9V battery; not included. Recommended use by adults only. Laser may cause serious injury if pointed in or near the eye. Package measures 9.125 x 9.125 x 1.75 inches and includes one Mini Laser Square.