ROMER Absolute Arm Compact

The compact portable measuring arm for shop-floor use

Offering accuracy for even the smallest of jobs, the ROMER Absolute Arm Compact brings high-tolerance 3D measurement to the shop floor. A faster and more accurate alternative to manual measurement tools, this versatile portable coordinate measuring machine (CMM) can perform numerous tasks around the workshop, making it the perfect complement to stationary CMM equipment.

The ROMER Absolute Arm Compact is a high-accuracy portable CMM designed to give reliable results in the tightest of spaces. More convenient than traditional measuring tools and far less prone to human error, it enables operators to check and recheck readings in a fraction of the time. Featuring industry-proven technology from the ROMER Absolute Arm range, the ROMER Absolute Arm Compact is perfect for measuring small to medium parts in a range of applications including:

  • On-machine verification
  • Machined part inspection
  • GD&T measurements
  • Fixture positioning
  • CAD-to-part comparison
  • Part alignment and setup
  • In-process quality checks
  • Digitising
  • Build and inspect

With a measurement volume of up to 1.2 metres and a choice of ISO 10360-2 or B89.4.22 certification available, the ROMER Absolute Arm Compact is easy to integrate into quality control processes. Capable of operating without mountings and with no need for referencing, the system is quick to setup and easy to use, providing a multipurpose measurement tool for users at any level of experience.

ROMER Absolute Arm Compact

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Absolute encoders and haptic feedback
Thanks to absolute encoders, the ROMER Absolute Arm Compact is ready to simply switch on and measure with no referencing required, while haptic feedback warns users if an axis limit is reached to eliminate bad measurements.

Automatic and repeatable probe recognition
An intelligent probe recognition system enables the ROMER Absolute Arm Compact to maintain repeatable results for different probe heads with no calibration or user intervention required.

Integrated work light and camera
The ROMER Absolute Arm Compact features an ergonomically-designed wrist to minimise operator fatigue, with user-friendly additions including an integrated work light and a camera to record setups for digital storage.

Freestanding or fixed mounting
The ROMER Absolute Arm Compact's integrated base plate can be mounted to almost any surface with bolts, anchors or magnets, while a removable counterweight system also enables freestanding operation - simply place and measure.

Runs all major metrology software
With the RDS system software inside, the ROMER Absolute Arm Compact is compatible with all major metrology software packages including the intuitive and highly-accessible PC-DMIS Touch - ideal for shop-floor users.

Wi-Fi and battery operation
Compatibility with ROMER Absolute Arm feature packs allows wireless communication and battery operation, minimising setup time and making the ROMER Absolute Arm Compact ideal for measuring on the move.

Additional probes and accessories
The ROMER Absolute Arm Compact is compatible with the full range of probes and accessories from the ROMER Absolute Arm range, offering great flexibility and ensuring users always have the right tools for the job.

     B89.4.22  ISO 10360-2  
 Model  Measuring range  Point repeatability  Volumetric accuracy  MPEp  MPEe Arm weight
 7312  1.2 m / 3.9 ft.  0.014 mm / 0.0006 in.  ± 0.025 mm / 0.0010 in.  8 µm  5+L/40 ≤ 18 µm  10.2 kg / 22.5 lbs
 7512  1.2 m / 3.9 ft.  0.010 mm / 0.0004 in.  ± 0.020 mm / 0.0008 in.  6 µm  5+L/65 ≤ 15 µm  10.8 kg / 23.8 lbs

   Volumetric accuracy according to B89.4.22  Volumetric accuracy according to ISO 10360-2
 Measurement  length  ROMER Absolute Arm  Compact 7312  ROMER Absolute Arm  Compact 7512  ROMER Absolute Arm  Compact 7312  ROMER Absolute Arm  Compact 7512
 10 mm  +/-0.025 mm  +/-0.020 mm  +/-0.00525 mm  +/-0.00515 mm
 20 mm  +/-0.025 mm  +/-0.020 mm  +/-0.0055 mm  +/-0.00531 mm
 50 mm  +/-0.025 mm  +/-0.020 mm  +/-0.00625 mm  +/-0.00577 mm
 100 mm  +/-0.025 mm  +/-0.020 mm  +/-0.0075 mm  +/-0.00654 mm
 200 mm  +/-0.025 mm  +/-0.020 mm  +/-0.01 mm  +/-0.00807 mm
 500 mm  +/-0.025 mm  +/-0.020 mm  +/-0.0175 mm  +/-0.0127 mm
 1000 mm  +/-0.025 mm  +/-0.020 mm  +/-0.018 mm  +/-0.015 mm
 1200 mm  +/-0.025 mm  +/-0.020 mm  +/-0.018 mm  +/-0.015 mm

Selecting a certification: is B89 or ISO better?

The ROMER Absolute Arm Compact is offered with a choice of two certifications: B89.4.22 or ISO 10360-2. Each certification quotes the arm accuracy in a different way. B89 is the standard certification typically used for PCMMs and quotes the arm performance (volumetric accuracy and point repeatability). ISO certification is a stationary CMM type certification that quotes the arm accuracy according to a variable 'L', where 'L' is equal to the length of measurement that is being performed. The longer the measurement, the higher the L value and therefore the lower the measurement accuracy.

ROMER Absolute Arm Compact


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