We R Memory Keepers-Laser Square And Mat. This tool is perfect for scrapbooking, stamping, quilting, school projects and more! This 18x8x1-3/4 inch package contains one laser square that slides from 0 to 12 inches and one mat. Requires two 9V batteries (not included). WARNING: This product contains chemicals known to the state of California to cause cancer, birth defects or other reproductive harm. Do not mouth or chew. Imported.

Inch and metric measurements
Lasers slides from 0 to 12 in. (0 to 30.5 cm)
Mat and laser square break down for convenient storage
Laser square can be adjusted to a 90 degree angle or placed together in a straight line
Self healing work surface