The GSL 2 Surface Laser continuously checks floor levels and flatness. The product eliminates the need for time-consuming floor spot checks. Requiring just one person to operate the laser is quick, convenient, and accurate for daily use at the jobsite. With accuracy of 1/8-in. at 30 ft, the GSL 2 offers line visibility of 30 ft, increasing to 60 ft when used with the target plate. Bosch Tool Corp.