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Nikon Metrology NV | Europe
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MCAx - Premium portable metrology

nikon metrology h120 armThe MCAx Manual Coordinate measuring Arm is a precise, reliable and easy-to-use portable 7-axis measuring arm. It is the perfect partner for the ModelMaker MMDx digital handheld laser scanners and Focus Handheld scanning and inspection software. This total solution’s accuracy, capability and portability make it feel perfectly at home in the metrology lab, on the shop floor and in-the-field.

The MCAx arm can be equipped with a wide range of probing systems for laser scanning, touch-trigger measurements and continuous scanning. Its flexibility makes this measurement arm the perfect solution for the widest range of measurement tasks. The MCAx range of 7-axis articulated arms is available with a measurement volume ranging from 2.0 and 4.5 meter diameter.

Key benefits

  • High accuracy and fast data throughput saves time and money
  • Optimized for hard-to-scan surfaces
  • Designed for use under all shop floor or field conditions
  • Extreme temperature stability and zero warm-up time
  • Quick and easy plug-and-play setup
  • Enhanced ergonomics mean stress-free usage
  • Short learning curve
  • Automatic probe recognition
  • Seamless transition between scanning and touch-probing
  • On-board calibration storage
  • Scanner compatible with all major brands of point cloud software
  • No external controller


  • Fast & accurate multi-sensor 3D inspection
  • Part-to-CAD inspection: First article inspection against CAD model
  • Inspection of geometric features
  • Gap-and-flush inspection
  • Reverse engineering: from concept studio clay to class A surfaces
  • Digitizing for additive manufacturing


Benefits & features
Rotating grips
Absolute encoders
Infinite joint rotation
Carbon construction
Automated probe recognition
Integrated lock
Ergonomic wrist
Magnetic mount

Flexible probing options

Customers can choose between high-accuracy, no-compromise ModelMaker MMDx scanners with 50mm, 100mm or 200mm  stripe widths.

For tactile measurements, MCAx supports a wide variety of tactile (straight and hook) and touch-trigger probes in many lengths and stylus configurations.

nikon metrology portable measuring articulated arms tactile probes MCAx
Tactile probes

  nikon metrology h120ModelMaker H120

Intuitive scanning and inspection software

Focus supports intuitive scanning and inspection using an articulated arm or Optical CMM with tactile and/or scanning probes. The software is specifically designed to control data flows with minimum user interaction.

The point cloud builds up in real-time as it is being acquired and is seamlessly followed by inspection of the measured geometry against CAD or another scan.

The Focus inspection toolbox includes advanced analysis functionality such as detailed part-to-CAD comparison, feature extraction, gap & flush inspection and GD&T.

Alternatively, through the Nikon Metrology API, the MMDx/MMCx handheld scanners and MCAx arms can be used directly in many 3rd party inspection software applications, including PolyWorks®, and Geomagic®.

For reverse engineering applications users can select from a broad offering of 3rd party packages which tightly integrate with all Nikon Metrology handheld scanners.

nikon metrology portable measuring articulated arms scanning inspection MCAxnikon metrology portable measuring articulated arms F1 wing Focus MCAxnikon metrology portable measuring articulated arms F1 wing Focus Handheld MCAx


A modular approach to arm mounting and probe connectivity as well as measurement volume extensions and datuming provides a multitude of accessories to enhance usage in the most demanding situations.

nikon metrology portable measuring articulated arms tripods MCAxLightweight portable or heavy-duty mobile tripods for floor-mountingnikon metrology portable measuring articulated arms bases MCAxMagnetic, vacuum or bolt-down bases for table or tool mountingnikon metrology portable measuring articulated arms extension MCAxMeasurement volume extension and probe solutions




 Measuring rangePoint repeatability1Volume length accuracy2Arm weight
MCAx20+ 2.0 m (6.6 ft.) 0.023 mm (0.0009 in.) ±0.033 mm (±0.0013 in.) 8.2 kg (18.1 lbs)
MCAx25+ 2.5 m (8.2 ft.) 0.027 mm (0.0011 in.) ±0.038 mm (±0.0015 in.) 8.5 kg (18.7 lbs)
MCAx30+ 3.0 m (9.8 ft.) 0.042 mm (0.0017 in.) ±0.058 mm (±0.0023 in.) 8.8 kg (19.4 lbs)
MCAx35+ 3.5 m (11.5 ft.) 0.055 mm (0.0022 in.) ±0.081 mm (±0.0032 in.) 9.1 kg (20.1 lbs)
MCAx40+ 4.0 m (13.1 ft.) 0.067 mm (0.0026 in.) ±0.098 mm (±0.0039 in.) 9.4 kg (20.7 lbs)
MCAx45+ 4.5 m (14.8 ft.) 0.084 mm (0.0033 in.) ±0.119 mm (±0.0047 in.) 9.7 kg (21.4 lbs)
MCAx20 2.0 m (6.6 ft.) 0.044 mm (0.0017 in.) ±0.061 mm (±0.0024 in.) 7.9 kg (17.4 lbs)
MCAx25 2.5 m (8.2 ft.) 0.049 mm (0.0019 in.) ±0.069 mm (±0.0027 in.) 8.2 kg (18.1 lbs)
MCAx30 3.0 m (9.8 ft.) 0.079 mm (0.0031 in.) ±0.100 mm (±0.0039 in.) 8.5 kg (18.7 lbs)
MCAx35 3.5 m (11.5 ft.) 0.099 mm (0.0039 in.) ±0.125 mm (±0.0049 in.) 8.8 kg (19.4 lbs)
MCAx40 4.0 m (13.1 ft.) 0.115 mm (0.0045 in.) ±0.151 mm (±0.0059 in.) 9.1 kg (20.1 lbs)
MCAx45 4.5 m (14.8 ft.) 0.141 mm (0.0056 in.) ±0.179 mm (±0.0070 in.) 9.4 kg (20.7 lbs)


1The Point Repeatability Test (or SPAT) is the reference test to determine measurement arm repeatability with ball probe. The cone is in front of the machine. Points are measured from multiple approach directions. The average point and the deviation of each point to the average center are calculated. The result is the maximum range divided by two.

2The Volumetric Accuracy Test most accurately represents the reasonable expectations for machine performance in practical measuring applications since it involves measuring a certified length standard many times in several locations and orientations and compares the resultant measurements to the actual length. The Volumetric Length Accuracy Test is the most appropriate test for determining machine accuracy and repeatability. The result is the maximum deviation of the measuring distance less the theoretical length.
The published value is the pass-off specification for ASME B89.4.22 Volumetric Performance and VDI/VDE 2617-9 probing form (MPEPF) & Indication for size (MPEE)
Probing specifications are relevant to both the center and offset probe ports of the MCAx arm. The specifications are achieved under stable environmental conditions with the MCAx arm mounted on a base plate or magnetic base and using 15 mm diameter, 50 mm long, steel ball probes connected to both probe ports.


Accuracy in combination with handheld laser scanner

Arm type Laser scanning system accuracy (2ơ)
MCAx20+ 28 µm 42 µm 48 µm 66 µm
MCAx25+ 32 µm 48 µm 54 µm 70 µm
MCAx30+ 38 µm 54 µm 60 µm 78 µm
MCAx35+ 48 µm 72 µm 76 µm 98 µm
MCAx40+ 60 µm 94 µm 96 µm 114 µm
MCAx45+ 80 µm 116 µm 120 µm 136 µm
MCAx20 36 µm 50 µm 56 µm 74 µm
MCAx25 40 µm 56 µm 62 µm 78 µm
MCAx30 52 µm 78 µm 82 µm 100 µm
MCAx35 70 µm 102 µm 106 µm 128 µm
MCAx40 70 µm 128 µm 136 µm 154 µm
MCAx45 122 µm 162 µm 168 µm 190 µm


Laser scanning system accuracy: The laser scanning system accuracy indicates the performance of the laser scanner combined with a handheld localizer. The test is performed by scanning a highly accurate reference plate in 5 different orientations of the articulated arm and laser scanner. The 5 resulting  point clouds are merged together in one point cloud and a best-fit plane is constructed through this  point cloud. For each of the points in this  point cloud, the distance is calculated to the best-fit plane. The result of the test is the 2ơ value of all of the calculated deviations.

General operating conditions

Working temperature 0 – 50°C (32 – 122°F)
Storage temperature -30 – 70°C (-22 – 158°F)
Relative humidity 10 – 90% non-condensing
Operational elevation 0 – 2000 m (0 – 6600 ft.)
Shock & Impact 6ms, 2
CE Compliance Yes
Universal worldwide voltage 110 – 240 V AC (50 – 60 Hz)



Scanner compatibility1 Handheld scanners: MMDx / MMCx / MMD / MMC
Dual-use CMM & handheld scanners: LC60Dx / LC60D
Feature pack Scanning pack
Probes 15mm diameter steel, approx. 50mm long
6mm diameter ruby, approx. 100mm long
3mm diameter ruby, approx. 100mm long
TESA TKJ connectors Standard
Locking counterbalance Standard
Hard case Standard
Dust cover Standard
Probe calibration sphere Standard
NIST traceable length standard Standard Optional
Rotating grips Standard Not available
Base Magnetic Bolt-down


1Scanner not included with MCAx arms as standard


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Case studies
Faster inspection and reporting with 3D laser scanning
Faster inspection and reporting with 3D laser scanning

A significant increase in orders for prototype pressings and bracketry has prompted Birmingham Prototypes to install two multi-sensor CMMs. The goal: to measure the sheet metal parts more quickly and to speed subsequent report generation.


Spring S.r.l. uses laser scanner for quality control of additively manufactured products
Spring S.r.l. uses laser scanner for quality control of additively manufactured products

Rapid prototyping and AM bureau - Spring srl, Italy, invested in a 7-axis articulated measuring arm and a digital laser scanning head. The equipment allows parts to be digitised quickly and accurately for reverse-engineering and 3D printing.

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Industrial applications
Related products

Case studies

Faster inspection and reporting with 3D laser scanning
Faster inspection and reporting with 3D laser scanning


Spring S.r.l. uses laser scanner for quality control of additively manufactured products
Spring S.r.l. uses laser scanner for quality control of additively manufactured products

en de