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Leica Digital Electronic Theodolite LDT-05 6003830

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  • Measure horizontal and vertical angles

  • Vertical axis compensator

  • Laser plummet

  • Horizontal angle indicator 

  • Reticle illuminator

  • Water resistant and dustproof to IP-54

  • Dual backlit LCD display

Availability: In stock


Overview for the Leica Digital Electronic Theodolite LDT-05

The Leica LDT-05 Digital Electronic Theodolite is a technologically advanced instrument for measuring angles and slope, offering excellent features at a great price. With five-second accuracy for precise measurements, a laser plummet for fast and easy setup, a reticle illuminator for bright views, and other attractive highlights, this Leica optical surveying tool is a superior choice for all your construction project needs.

Accuracy and Efficiency

Does your construction project require uncompromising standards of accuracy?  The Leica LDT-05 Digital Electronic Theodolite measures angles with 5-second accuracy, excellent precision for the most demanding job requirements. The automatic vertical angle compensator, or tilt sensor, which can be switched on or off, ensures accuracy is maintained if your instrument shifts out of balance. If the theodolite shifts out of the compensation range, a tilt warning will display in the vertical angle reading space, helping you avoid costly measurement errors.

The LDT-05 theodolite transit features a laser plummet to aid operators in centering the instrument on top of the control point with ease and accuracy.  The horizontal angle indicator, when enabled, will beep when the reading is close to each of the four right-angles, 0, 90, 180 and 270 degrees, assisting with faster orientation.  Surveying professionals can measure angles in units of degree, gon, or mil, and set minimum angle readings of 1-second, 5-second or 10-second.  With the touch of a button construction professionals can set angle readings to 0, and enable the horizontal angle hold.


Learning how to operate the Leica Geosystem 5-Second Theodolite is easy and simple with a step-by-step instruction manual that comes with each device.  Both sides of the instrument feature back-lit LCD display panels, enabling  construction professionals to access functions from either side, and easily view readings even in low-light conditions.  When working in such dimly lit areas, users can switch on the reticle illuminator for consistently clear and brightly lit views of the target. 

Always Reliable

Planning a long day in the field?  With the Leica 5-Second Theodolite, you never have to worry about running out of power.  The NiMH rechargeable battery pack comes standard with the device and takes only 3-4 hours to fully charge.  The instrument also comes with an AA alkaline battery holder, giving you an additional option should you need backup power.  A visual battery power indicator, displayed on the LCD screens, always lets you know how much charge you have left.  The optional auto-shut off will turn the unit off after 30 minutes of inactivity, conserving power and saving you money.  Rugged and durable, the instrument is resistant against dust, humidity and vibrations, and has an IP54 environmental protection rating.

No matter the project, whether you are planning a new building, mapping a highway system, laying out floor plans for a new shop, or surveying an outdoor landscape, the Leica LDT-05 Digital Electronic Theodolite offers exceptional productivity at the best price.  Accelerate your work-flow and work smarter with this reliable and hard-working instrument.

Features for the Leica Digital Electronic Theodolite LDT-05

  • Measure horizontal and vertical angles
  • 5-second accuracy
  • Vertical axis compensator diminishes costly errors
  • Laser plummet for convenient setup
  • Horizontal angle indicator assists with faster orientation
  • Reticle illuminator for low light conditions
  • Numerous customization options 
  • Water resistant and dustproof to IP-54
  • NiMH rechargeable battery pack plus charger
  • AA alkaline battery holder for additional power option
  • Dual backlit LCD panels

Specifications for the Leica Digital Electronic Theodolite LDT-05

Image Erect
Magnification 30x
Diameter of Objective Lens (Aperture) 1.7 in (45 mm)
Focus Distance 4.43 ft (1.35 m) to infinity
Field of View 1 degree 30 minutes
Ratio of Stadia Lines 1/100
Resolving Power 3 seconds
Reticule Illumination Yes, on/off button
Quick Sites (Rough Sites) Yes
Angle Measurement
Minimum Reading 1 second, 5 second, or 10 second
Unit of Reading/Measure Degree / mil / gon / V%
Display Dual back-lit LCD
Accuracy 5 second
Measuring Method/Reading System Incremental photoelectricity
Detection Method Horizontal both sides, vertical single side
Plate/Tubular Bubble Vial 30 seconds/2 mm
Circular Bubble Vial 8 minutes/2 mm
Weight 10.14 lbs (4.6 kg)
Warranty 1 year
Dimensions 6.4 x 6.1 x 13.4 in. (164 x 154 x 340 mm)
Protection Class IP54
Tripod Thread 5/8 x 11
Auto Shut Off After 30 minutes
Tribrach Detachable
Power Source NiMH rechargeable, option for 4 AA alkaline batteries
Battery Life Alkaline - up to 36 hours
Battery Life Alert Visible alert
Voltage 4.8
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
Sides Dual
Keys Six-button keypad
Touchscreen No
Backlight Yes
Operating -4°F to +122°F (-20°C to +50°C )
Tilt Sensor/Compensator
Range +/-3 minutes
Type Verticle axis
Method Automatic
Laser Plummet
Accuracy .06 in. at 4.9 ft (1.5mm at 1.5 m)
Wavelength 1mW

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