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Leica Digital Electronic Theodolite LDT-05 6003830

  • Leica Digital Electronic Theodolite LDT-05 6003830
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Product Description

The Leica LDT-05 Digital Electronic Theodolite is an economical but advanced instrument for measuring angles and slope, 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. 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 also 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 users can set angle readings to 0, and enable the horizontal angle hold.

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. 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 roughly 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.


  • 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

Package Includes:

  • LDT-05 instrument 8226687
  • Carrying Case
  • Plumb bob
  • Rechargeable battery
  • Battery charger
  • Alkaline battery holder
  • Tool kit
  • User Manual



  • 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

    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 Manufacturer's Warranty
  • 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
  • Approximate Battery Life: Alkaline - up to 36 hours
  • Battery Life Alert: Visible alert
  • Voltage: 4.8


  • 90-Degree Layout
  • Checking Angles
  • Alignment and Plumb
  • Short-Range Leveling
  • General Construction
  • Anchor Bolt Positioning
  • Steel Column Placement
  • Setting Elevations
  • Setting Lines
  • Basic Grade Work

    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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