1996 saw the launch of hedue's first rotating laser. At that time still a device with manual leveling via vials, a rotating laser with electronic position sensors followed already in 1997. Today, all rotating lasers from hedue have motorized self-leveling with an accuracy of at least 1 mm at 10 m. The horizontal leveling accuracy of all hedue rotating lasers is digitally tested and the devices are supplied with a calibration certificate.