Hire The Leica AT401 Laser Tracker

The Leica Absolute Tracker AT401 is the most portable 3D Absolute Tracker for traditional inspection tasks or for fully guided measurement processes, its all-in-one large volume laser tracker system sets a new standard for portability, simplicity, robust construction and measurement efficiency.

Measurement volume Ø320m

IP54 Sealed

Extremely light: 8.1 kg incl. control

Accuracy: 15µm +/- 6µm per meter

Highly accurate gravity level

Built-in environmental monitoring


An all-in-one metrology solution more portable than any other on the market, the Leica Absolute Tracker AT401 from Hexagon Manufacturing Intelligence is a self-contained measurement workshop inside a compact and convenient single case.

All-in-One Integrated Design

From integrated wireless connectivity, environmental monitoring and all-day battery power, to overview camera, RapidSight aim scope and ergonomic carry handle, every need is built in.

Single-Box Probing System

Just one case contains the lightest and most portable sensor and probe as well as IR remote, with various transportation cases for full flexibility.

Smart Connectivity

Built-in WiFi with true access point functionality delivers single-user operation through simple PC setup and remote control options via laptops, tablets or smartphones.


Automatically re-establishes interrupted line of sight within a wide field of view with no user interaction required.

Battery Power

Independent hot-swappable battery power supply allows for quick and easy cable-free setup and all-day wireless operation.

IP54 Certification

The IEC-certified sealed unit guarantees ingress protection against dust and other contaminants, enabling effective measurement in even the harshest environments.


Integrated environmental unit monitors conditions including temperature, pressure and humidity to compensate for changes and ensure accurate measurements regardless of external factors.

Measurement Volume

Ultra-large measurement volume of up to 320 metres (ø), with minimum measurement distance less than 0.8 metres.


Enables measurement with the Z-axis aligned to gravity, ideal for leveling and alignment tasks.

Continuous Measurement

Continuous time and distance measurement mode.

Operating Temperature

Wide operating temperature range of -15 to 45 degrees Celsius.


With outperforming measurement process speed, operational simplicity like no other laser tracker and an unmatched level of robust construction, the Leica Absolute Tracker AT401 is a calculated bundle of affordable innovation without equal on the portable measurement market. Designed for leading results in almost any imaginable measurement environment, it is rated for operation in temperatures ranging from -15 to 45 degrees Celsius and features built-in environmental monitoring, orient-to-gravity functionality and construction in line with the rigorous IP54 certification standard.


All accuracies are specified with Leica Geosystems precision 1.5” Red Ring Reflectors (delivered with each sensor) and a measurement mode of 2 seconds per point under stable environmental conditions. Full range is specified as 1.5 to 80 meters away from the laser tracker within a vertical range of +/- 45 ̊. All accuracies are stated in maximum permissible error (MPE). Typical results are half of MPE.

AT 401: +/- 15 μm + 6 μm/m (+/- 0.0006” + 0.00007”/ft) Leica Absolute Tracker AT401 accuracy

Sensor Size: 290 x 221 x 188 mm (11.4” x 8.7” x 7.4“)
Sensor Weight: 7.3 kg (16 lbs)
Controller Size: 250 x 112 x 63 mm (9.8” x 4.4” x 2.5”)
Controller Weight: 0.8 kg (1.75 lbs)

Infinite Horizontal Rotation:+/-360 ̊
Infinite Vertical Rotation:+/- 145 ̊
Typical working Volume: 320 m

Dust/Water: IP54 (IEC 60529)
Operating Temperature: 0 ̊C to +40 ̊C
Relative Humidity: Max. 95% (non-condensing)
Altitude: -700 to 5500 m (-2,300 to 18,000 ft) Motorization
Acceleration: 360 ̊/s2
Rotation Speed: 180 ̊/s
PowerLock: 10 ̊ FOV

Absolute Angular Performance
Resolution: 0.07 arc Seconds
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)
Inclination Setting Accuracy (2σ):+/- 1 arc second

Absolute Distance Performance
Resolution: 0.1 μm
Accuracy (MPE):+/- 10 μm (+/- 0.00039”)
Repeatability (MPE):+/- 5 μm (+/- 0.0002”)

Laser Emission Class 2 Laser Product in accordance with the IEC 60825-1 Second Edition (2007-03) General Information

Overview Camera (OVC) 4:3 IR enhanced Image ≈10 ̊ FOV

Environmental Monitor Internal – Temperature, Pressure and Humidity External – Air Temperature – Object Temperature

Remote Control Integrated 4 Button IR

Interfaces Cable – TC P/IP (Cat5) Wireless – WLAN (IEEE 802.11g)

Power Management Internal – lithium-ion battery External – AC power supply Optional –Power Over Ethernet (PoE+)


To enquire about the Leica AT401 Laser Tracker please fill out the form below or call +44 (0) 1455 251251

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