Rotating laser, self-leveling
In 1996, the first hedue rotary laser was launched on the market. At that time, it was still a device with manual levelling using spirit levels, but a rotary laser with electronic position sensors followed as early as 1997. Today, all hedue rotary lasers have motorized self-levelling with an accuracy of at least 1 mm over 10 m. The horizontal levelling accuracy of all hedue rotary lasers is digitally checked and the instruments are supplied with a calibration certificate.