DeWalt’s self-leveling rotary lasers are designed for applications including site leveling, excavation, post installation, concrete leveling, multi-level construction, block layout, and benchmark and elevation leveling. The DW074 and DW079 (for interior and exterior use) and the DW078 (for exterior use only) feature a protected rotary head and enclosed battery door. The DW078 and DW079 include an automatic horizontal self-leveling system that provides accuracy at ±1/8-inch per 100 feet, while the DW074 provides accuracy at ±1/4-inch per 100 feet.
For more information, check the box for Reader Service No. 19 at http://www.freeproductinfo.net/rer.