The Leica Absolute Tracker AT401 is a portable CMM that allows extreme precision over ultra large distances. It is able to be powered by its own internal battery and works in the most demanding environment, yet maintains the highest level of precision and the largest ever work envelope.

It provides a unique “All in One” system design that incorporates needed accessories as built in live video, level to gravity, environmental monitoring and even an integrated IR remote control. By utilizing the integrated Wireless LAN communication, the sensor can be used completely wirelessly.

Standard Specifications:

  • Absolute Tracker AT401
  • Controller, cable and controller fixture
  • Temperature sensor
  • Tribrach
  • IR remote control
  • 5 m LAN cable
  • Battery charger
  • AC adapter
  • Shipping container
  • Producer inspection certificate M (angle)
  • Compensation SW


  • Infinite Horizontal Rotation: +/-360˚
  • Infinite Vertical Rotation: +/- 145˚
  • Typical Working Volume: 320 mAbsolute Distance


  • Resolution: 0.1 µm
  • Accuracy (MPE): +/- 15 μm + 6 μm/m (+/- 0.0006” + 0.00007”/ft)
  • Repeatability (MPE): +/- 7.5 μm + 3 μm/m (+/-0.0003” + 0.00004”/ft)