The NE-100 series electronic theodolites replace the now obsolete NE-20S/20H. The NE-20S was a hugely successful model, and the new series provides even more features, power, and value! Designed for general construction and survey applications, you get the superior optics, ease of use, and rugged reliability common to all Nikon surveying and construction instruments. Two models are available to suit your particular needs and budget