The Trimble M1 DR is a versatile, easy-to-use surveying instrument that is reliable and affordable. The Trimble M1 Total Station allows you to measure up to 3000 m with a single prism and up to 400 meters in DR mode. All M1 Total Stations come standard with built-in Bluetooth wireless technology, a coaxial red light laser pointer for quick and easy targeting, and a built-in optical plummet for positioning the instrument at known points. The internal memory allows you to store up to 10,000 measurements. With these features and more, the Trimble M1 DR Total Station will be a reliable part of your everyday surveying equipment kit.