Product Description<br />Includes 24 in. Measuring Rail for GLM80 Laser Distance Meter - R60/ Carrying Case/ Pocket Guide<br /><br />For use with GLM 80 Professional as a digital spirit level<br />Additional horizontal and vertical bubble vial for fast indication of calibration<br />Sturdy aluminum rail for high precision and durability<br />Transforms the GLM 80 into a 24" digital level<br />