Spectra Precision Surveying introduced a new version of its Constructor 100 Electronic Total Station. New features include a Tracklight and battery side cover, an optical plummet or laser plummet tribrach, detachable numeric control unit for faster coordinate entry, a distance accuracy of 3 mm + 3 ppm, a range to 1 prism of 1,800 m and an internal memory of 2,500 points.