Hire The Romer Probe Arm

A first in the world of portable measuring arms: The ROMER Absolute Arm features absolute encoders and is therefore the first measuring arm which does not require referencing before measurement. When the arm is turned on, it's ready to go.

Quick set up and no warm up time required

Available in various sizes; 2 and 4.5 meters

Measure where there is no line-of-sight

Thermally stable

Repeatable probe mounting

Compatible with all major metrology software


Whether its Quality control, inspection, on-machine verification, reverse engineering, virtual assembly or 3D modelling the ROMER Absolute Arm will meet your every need. Much more than just a metrology tool, its value lies in its versatility. Portability, stability, light weight and high-performance laser scanners make the ROMER Absolute Arm an all-purpose 3D measurement, analysis and digitising tool that can be used by anyone, anywhere and with minimum training.

Unlike many metrology devices, the ROMER Absolute Arm does not require warm-up time or initialization, thanks to a stable carbon fibre structure and industry leading Absolute encoders. Simply take the measuring arm to the part, switch it on and start measuring.


The ROMER proprietary software RDS features SMART technology, allowing total management of checks in the field as well as temperature and shock monitoring.

Automated & repeatable Probe Recognition 

Intelligent Quick Change Probes: Swap touch-probes at any time without the need to recalibrate. The Romer Absolute Arm’s repeatable mount allows to change probes on the fly, according to your measurement needs.

Instant Feedback

The ROMER Absolute Arm provides immediate acoustic and haptic feedback to the operator, allowing the Romer Absolute Arm to be used in even the most harsh industrial environments.

Absolute Encoders 

Referencing and warm-up time was for yesterday – just switch the arm on and measure.

Measurement Volume

Size does matter: The ROMER Absolute Arm is available in seven lengths between 1.2 m and 4.5 m.


All ROMER Absolute Arms including scanning systems pass through B89.4.22 certification. Additional certifications according to VDI/VDE 2617-9 are also available. The ROMER Absolute Arm Compact model is available with a choice of ISO 10360-2 or B89.4.22 certification.

Zero G

Zero G counterbalance eliminates torque in the base and arm members, more forgiving of the arm being mounted in a vertical position and puts you in control of the arm.


If the Romer Absolute Arm is not in use it can be locked safely into its rest position. SmartLock also allows the arm to be fixed in any intermediate position.

Feature Packs

Thanks to easily interchangeable Feature Packs, the functionality of the Romer Absolute Arm can always be enhanced. Feature packs are available for Wi-Fi communication, Wi-Fi scanning capability and full battery operation.


All models of the ROMER Absolute Arm are available in three levels of accuracy, allowing you to select the right measuring arm for your application requirements and budget. The 73 Series and 75 Series arms offer excellent price/performance ratios for everyday metrology operations, while the 77 Series – the most accurate ROMER Absolute Arm ever produced – is ideal for specialist or high-end measurement applications.


All probing specifications are achieved with a ROMER Absolute Arm mounted on a ROMER base plate or magnetic base and using a 15 mm steel ball probe with a length of 50 mm under stable environmental conditions.

75 Series  Model Measuring Range Point Repeatability1 Volumetric Accuracy2 Arm Weights
 7530 3.0 m / 9.8 ft.  0.030 mm / 0.0012 in.  ± 0.044 mm / 0.0017 in.  8.3 kg / 18.3 lbs
 7535  3.5 m / 11.5 ft.  0.040 mm / 0.0016 in. ± 0.057 mm / 0.0022 in.  8.6 kg / 19.0 lbs

 All Specifications according to B89.4.22 and VDI/VDE 2617-9

The Point Repeatability Test 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.

The 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.

Ambient conditions
Working temperature: 0C – 50°C (32°F – 122°F)
Storage temperature: -30° -70 C (-22°F – 158°F)
Relative humidity: 10% – 90% non-condensing
Operational elevation: 0-2000 m (0-6600 ft)

Marks of conformity
CE Compliance: Yes

Power requirement
Universal worldwide voltage 110V-240V


To enquire about the Romer Probe Arm please fill out the form below or call +44 (0) 1455 251251

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