The Pacific Laser Systems GR16 Grade Rod is a telescoping rod that is used with constructions lasers when taking measurements and elevations. This collapsible grade rod offers a fully extended height up to 16.3 feet. It includes both US and metric system calibrations that allow surveyors to easily take and read results. In addition, the GR16 grade rod weighs only 3.7 pounds and has a size of 50.5” L x 1.6” W x 2.4” H.