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Sokkia DT540L 5" Digital Theodolite with Laser Pointer, Dual Display 303227101

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  • Measure horizontal and vertical angles

  • Long-range laser pointer

  • 2.5-inch telescope resolving power

  • Dual-axis compensator

  • Absolute encoder

  • Reticle illumination

  • RS232C serial port

  • Dual backlit LCD display

  • 140-hour battery life

  • Water resistant and dustproof to IP-66

Availability: In stock


Overview for the Sokkia DT540L 5" Digital Theodolite with Laser Pointer, Dual Display

The Sokkia DT540L Digital Theodolite features a long-range laser pointer that makes sighting exact points easier and facilitating alignment, layout, leveling, grading and squaring application. With 5-second accuracy, this optical instrument delivers crystal clear images of points with its telescope’s 30X magnification and 2.5-inch resolving power. It also features a built-in absolute encoder and automatic axis compensation for reduced power consumption and correcting tilt errors.

Laser with Ultra-Small Beam Spot

Under indoor or underground conditions, the DT 540L’s laser pointer reaches 660 feet. The ultra-narrow beam precisely measures through walls, corners, fence openings and tree branches.  This visible laser is coaxial, making outdoor aiming quick while providing construction professionals with direction during layout.

Dual-Axis Compensator

The DT540L digital theodolite automatically compensates both vertical and horizontal angles by monitoring the tilt of the instrument in two directions.

Enhanced Reliability with Absolute Encoders

Integrated absolute encoder utilizes advanced algorithm and digital sampling technology that allows surveyors to start taking measurements as soon as the theodolite is turned on. This technology remarkably reduces power consumption by restoring the azimuth after the instrument’s power is cut off.

Different Display Modes

Select the angle display unit that best suits you. Horizontal angle is switchable between clockwise and counterclockwise, angle hold and zero-set functions are also provided.

Right-Angle Notification

Once the zero horizontal angle direction is determined, the DT540L survey instrument emits audible tones for each of the four right-angle directions. Specifically, it sounds two different tones within ±15 degrees of 90 degrees and stops beeping when it comes within ±1 degree.

Easy to Use Control Panel

This Sokkia theodolite features a simple 4-key operation, dual and an integrated reticle illuminator that provides clear angle readings and allows construction professionals to work under all lighting conditions. Field data can also be transferred to external devices via the RS-232C serial port.

Reliable with Long Working Hours

Complying with the tough IP-66 standard for resistance to dust and water, the Sokkia DT540L offers superior dependability under harsh environments. This survey tool is powered by four standard AA alkaline batteries that operates up to 140 hours and works for two to five weeks without changing batteries depending on usage.

This Sokkia theodolite package comes with a hard carrying case, lens cap, plumb bob, tool pouch, vinyl cover, cleaning cloth, batteries and 1-year manufacturer's warranty.

Features for the Sokkia DT540L 5" Digital Theodolite with Laser Pointer, Dual Display

  • Measure horizontal and vertical angles
  • 5-second accuracy
  • Long-range laser pointer
  • Ultra-small beam spot
  • 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 DT540L 5" Digital Theodolite with Laser Pointer, Dual Display

Image Erect
Magnification 30x
Diameter of Objective Lens (Aperture) 1.8 in (45 mm)
Focus Distance 3.3 ft (1 m)
Field of View 1 degree 30'
Ratio of Stadia Lines 100
Resolving Power 2.5-inch
Length of Tube 6 in (152 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
Plate/Tubular Bubble Vial 40 seconds/2 mm
Circular Bubble Vial 10 minutes/2 mm
Weight 9.3 lbs (4.2 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
Power Source 4 x LR6/AA batteries
Battery Life 140 hours
Battery Life Alert yes
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
Operating -4°F to +122°F (-20°C to +50°C )
Tilt Sensor/Compensator
Range ±3' (±55mgon)
Laser Pointer
Range Indoors 656 ft (200 m)
Class 2
Wavelength 633 nm
Range Outdoors 164 ft (50 m)
Pin Port RS-232C

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