Laser Straight level meter

1. Laser guided leveler projects 50-foot line
2. Built-in level bubbles,
3. Reusable adhesive adheres to any surface, leaves no marks
4. Projects a perfectly straight line on any surface
5. 2 x AAA batteries (not included)
6. Size:10.3cm x 3.5cm x 6cm
7. Weight:3.96oz(112.1grams)with batteries and pins.
8. Accuracy:+/-0.55"@30feet(+/-1.4mm per meter)
9. Laser wave length:625~670mm
10. Housing: plastic