Digital Theodolite Sokkia DT-540

Digital Theodolite Sokkia DT-540 • Measures horizontal and vertical angles • 2.5-inch telescope resolving power • Dual-axis compensator • Absolute encoder • Reticle illumination • Audible right-angle notification • RS232C serial port • 140-hour battery life • Water resistant and dustproof to IP-66 • Dual backlit LCD display Features Sokkia DT540 • Measures horizontal and vertical angles • 5-second accuracy • 2.5-inch telescope resolving power • Dual-axis compensator automatically corrects tilt errors • Absolute encoder • Reticle illumination for good viewing in low light conditions • Audible right-angle notification • Optical plummet • Detachable tribrach • RS232C serial port • Water resistant and dustproof to IP-66 • Dual backlit LCD display • Up to 140-hour battery life Specifications for the Sokkia DT540 5" Electronic Digital Theodolite Dual Display Telescope • Image: Erect • Magnification: 30x • Diameter of Objective Lens ( Aperture) : 1.8 in ( 45 mm) • Focus Distance: 3 ft ( 0.9 m) • Field of View: 1 degree 30' • Ratio of Stadia Lines: 100 • Resolving Power: 2.5-inch • Length of Tube: 5.9 in ( 149 mm) • Reticule Illumination: yes Optical Plummet • Image: Erect • Magnification: 3x • Field of View: 3 degrees • Focus Range: 1.64 ft ( 0.5 m) Angle Measurement • Display: 1" / 5" ( 0.2/ 1mgon) • Accuracy: 5-second • Circle Diameter: 2.8 in ( 71 mm) • Measuring Method/ Reading System: Absolute rotary encoder scanning • Detection Method: Horizontal: diametrical; vertical: single Level • Plate/ Tubular Bubble Vial: 40 seconds/ 2 mm • Circular Bubble Vial: 10 minutes/ 2 mm General • Weight: 9.0 lbs ( 4.1 kg) • Warranty: 1-year • Dimensions: 7.4 x 5.9 x 12.3 in ( 18.8 x 14.9 x 31.3 cm) • Protection Class: IP-66 ( dustproof and protection against water jets and heavy seas) • Tribrach: Detachable Battery/ Power • Power Source: 4 x LR6/ AA batteries • Battery Life: 140 hours • Battery Life Alert: yes Applications • 90-Degree Layout: yes • Checking Angles: yes • Alignment and Plumb: yes • Short-Range Leveling: yes • General Construction: yes • Anchor Bolt Positioning: yes • Steel Column Placement: yes • Setting Elevations: yes • Setting Lines: yes • Basic Grade Work: yes Display and Keypad • Type: LCD, 7 digits x 2 lines • Sides: Dual • Backlight: yes Temperature • Operating: -4° F to + 122° F ( -20° C to + 50° C ) Tilt Sensor/ Compensator • Range: ± 3' ( ± 55mgon) Interface • Pin Port: RS-232C