A portable measuring arm is a good investment. The time required to train users is minimal – even unpracticed personnel will produce reliable measuring results in a short time due to the user-friendliness of the ROMER Absolute Arm. Inspection and control throughput is increased dramatically, and because the ROMER Absolute Arm helps to ensure quality, there is a fast return on investment. Increase productivity and minimise off-spec production – in the long term and with absolute efficiency.
ROMER Feature PacksROMER Feature Packs unfold the full potential of a portable measuring arm. These optional feature packs utilise the ROMER Feature Pack Port interface. All extensions are perfectly coordinated with the ROMER Absolute Arm and are part of an integrated system.
The ROMER Mobility Pack includes a battery and WiFi communication – maximum flexibility for the ROMER Absolute Arm.
The ROMER Scanning Pack is the interface for laser scanners. They connect directly to the arm.
Feature packs are thermally and mechanically stable, easy to exchange for the user and open for new technologies and additional accessories.
ROMER Feature Pack Port for data communication
The ROMER Absolute Arm has a specific standard for data communication. If required, with the ROMER Feature Pack Port interface, the Absolute Arm can be used as a fully wireless CMM.
RDS – the ROMER tool for software integration
RDS is the virtual image of a ROMER measuring arm. This software with its intuitive operation facilitates probe calibration and includes a diagnosis function for checking the measuring accuracy of the arm in compliance with international standards.
ROMER ergonomics - accuracy made easy
Carbon fibre structure. Absolute operational safety with SpinGrip and a handle with incorporated mouse function. Illumination of the part and an integrated digital camera are available upon request. Overall weight only 7.7 kg/17 lbs (2.5 m/8.2 ft. arm). The ROMER Absolute Arm is an all-round balanced measuring instrument. Its operation is a matter of routine after only a few hours, even in locations where traditional CMMs would never perform.
Infinite Rotation
ROMER’s patented infinite rotation of the principal axes allows a comfortable inspection of hard-to-reach areas.
Integrated Zero-G counterbalance
An optimized counterbalance reduces operator fatigue and delivers effortless control in all positions, including above and below the centreline.
Specifications| 73 series | Model | Measuring Range | Point Repeatability | Volumetric Accuracy | Arm Weights |
| 7315 | 1.5 m / 4.9 ft. | +/- 0.025 mm / 0.0010 in. | +/- 0.037 mm / 0.0015 in. | 7.1 kg / 15.6 lbs |
| 7320 | 2.0 m / 6.6 ft. | +/- 0.030 mm / 0.0012 in. | +/- 0.042 mm / 0.0017 in. | 7.4 kg / 16.3 lbs |
| 7325 | 2.5 m / 8.2 ft. | +/- 0.038 mm / 0.0015 in. | +/- 0.051 mm / 0.0020 in. | 7.7 kg / 17.0 lbs |
| 7330 | 3.0 m / 9.8 ft. | +/- 0.065 mm / 0.0026 in. | +/- 0.095 mm / 0.0037 in. | 8.0 kg / 17.6 lbs |
| 7335 | 3.5 m / 11.5 ft. | +/- 0.095 mm / 0.0037 in. | +/- 0.130 mm / 0.0051 in. | 8.3 kg / 18.3 lbs |
| 7340 | 4.0 m / 13.1 ft. | +/- 0.120 mm / 0.0047 in. | +/- 0.149 mm / 0.0059 in. | 8.6 kg / 19.0 lbs |
| 7345 | 4.5 m / 14.8 ft. | +/- 0.150 mm / 0.0059 in. | +/- 0.170 mm / 0.0067 in. | 8.9 kg / 19.6 lbs |
| 75 series | Model | Measuring Range | Point Repeatability | Volumetric Accuracy | Arm Weights |
| 7520 | 2.0 m / 6.6 ft. | +/- 0.016 mm / 0.0006 in. | +/- 0.023 mm / 0.0009 in. | 7.7 kg / 17.0 lbs |
| 7525 | 2.5 m / 8.2 ft. | +/- 0.020 mm / 0.0008 in. | +/- 0.029 mm / 0.0011 in. | 8.0 kg / 17.6 lbs |
| 7530 | 3.0 m / 9.8 ft. | +/- 0.033 mm / 0.0013 in. | +/- 0.049 mm / 0.0019 in. | 8.3 kg / 18.3 lbs |
| 7535 | 3.5 m / 11.5 ft. | +/- 0.043 mm / 0.0017 in. | +/- 0.061 mm / 0.0024 in | 8.6 kg / 19.0 lbs |
| 7540 | 4.0 m / 13.1 ft. | +/- 0.061 mm / 0.0024 in. | +/- 0.075 mm / 0.0030 in. | 8.9 kg / 19.6 lbs |
| 7545 | 4.5 m / 14.8 ft. | +/- 0.070 mm / 0.0028 in. | +/- 0.082 mm / 0.0032 in. | 9.2 kg / 20.3 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 is the most representative test for volume measurement accuracy. A gage block with a known and certified length is measured several times throughout the working volume. This gage block is installed in different positions and measured depending on multiple approach directions. The result is the maximum deviation of the measuring distance less the theoretical length.
Ambient conditions
Working temperature: 0˚C - 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