The GradeLight 3000 pipe laser measures just 10.5 in. in length, enabling it to fit into tight inverts and small pipe jacking pits. It will self-level over its +40% to -10% grade range, with a total compensation of +45% to -15%, plus compensate up to 6° in its cross axis. A vertical rotating laser beam can be used for manual alignment of the laser beam, or the optional AutoTarget enables automatic alignment of the laser beam at the press of the alignment button. The unit can be powered by its Li-Ion battery pack, alkaline batteries or from a 12V DC source.