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Also, Sokkia added longer range reflectorless total stations SET230R3, SET330R3 and SET530R3 to its Series30R model range. Using Class 3R laser, these new models measure up to 350 m (1,140 ft) without reflectors (with Kodak Gray Card 90% reflective). The long range Class 3R models extend from SET230R3 (accuracy 2"/0.6 mgon) to SET330R3 (3"/1 mgon) to SET530R3 (5"/1.5 mgon). In addition, Sokkia has increased reflectorless measuring range of its existing Class 2 models SET230R, SET330R and SET530R to 150 m (490 ft); these models extend from SET230R (2"/0.6 mgon) to SET330R (3"/1 mgon) to SET530R (5"/1.5 mgon).
Also, Sokkia introduced the DT610 to its line of digital theodolites, replacing the DT600. Battery life for the DT610 has been increased to 110 hours on two standard C alkaline batteries. The DT610 notifies users when the instrument comes within Â±15Âº of each of the four right angle 90Âº directions by emitting an audible tone. The tone changes pitch when a right angle is passed. A brief silence between the tones indicates the instrument is pointing to within Â±1Âº of a right angle. When the instrument is restarted, the DT610 displays the azimuth angle automatically. Stability and reliability are provided by the RAndom Bidirectional (RAB) code technology that is incorporated in Sokkia's original absolute encoders. The DT610 has horizontal and vertical angle accuracy of 7" (2.2 mgon). The DT610 has a large LCD screen, four-key operation and IP66 rating. (Sokkia, Olathe, Kan.)