The new DT-200L Series feature the same high-quality advanced absolute circle reading technology found in Topcon's high-performance total station products, and they continue to deliver the highest quality optics and electronics you expect to find in Topcon theodolites. All this, plus the addition of a laser diode that's perfect for easy, one-person alignment jobs. Available in three affordable models delivering 5", 7", or 9" angle accuracy, there is a DT-200L theodolite perfect for any job. They feature waterproof and dustproof construction that stands up to even the toughest conditions so you don't have to worry about downtime due to inclement weather. All models are also compact and lightweight for easy portability; and their simple operation provides precise measurement in a functional, hassle-free package.