AccuArm Portable CMM: Industrial Metrology That Goes Where You Work

What AccuArm Is

AccuArm is SCANOLOGY's first portable coordinate measuring machine —  and it further expands SCANOLOGY's digital measurement ecosystem, giving industrial users a complete range of options from full 3D scanning to high-precision contact coordinate measurement.

SCANOLOGY's scanner lineup excels at capturing surface geometry: full-surface point clouds, deviation maps, reverse engineering workflows. AccuArm complements this with a different strength — precise coordinate measurement through a touch probe, capturing the exact spatial position of specific critical features.

The result is a measurement system that is fully portable and delivers coordinate accuracy that meets ISO 10360-12 — the international standard for portable CMMs.

What AccuArm Does Best

Point height and Z-position measurement

When you need to know the exact height of a contact point, support surface, or locator pin relative to a datum, AccuArm touches the point directly and returns the coordinate immediately.

Application: Welding fixture contact point verification

Point-to-point distance and position

Hole-to-hole distance, pin position relative to a datum, slot location, assembly spacing — these are discrete coordinate measurements. A 3D scanner captures everything; a portable CMM captures exactly what you need, with the highest possible confidence in each individual measurement point.

Application: Automotive seating H-point and R-point measurement

Feature size: diameter, thickness, depth

Measuring the diameter of a hole, the thickness of a wall, or the depth of a recess requires fitting geometry to measured points. With AccuArm, this is a direct measurement workflow: probe the feature, fit the geometry, read the result.

Application: Automotive wheel spoke wall thickness, Large die deep hole and precision bore inspection

On the part, wherever it is

AccuArm is fully portable, wireless, and battery-powered — ready to measure at the production line, the installation site, or the delivery dock.

Application: EV battery module laser welding equipment

The precision of contact coordinate measurement, applied wherever the part actually is. That is what AccuArm is built for.

Why AccuArm Performs in Production Environments

Bringing a measuring instrument onto a production floor introduces challenges that a metrology room never has. AccuArm is engineered specifically to handle them.

Carbon fiber structure
AccuArm's arm segments are made from carbon fiber — significantly lighter than aluminum or steel at equivalent stiffness, and with a very low coefficient of thermal expansion.

This matters for two reasons:

• Easier to maneuver through a full measurement session without operator fatigue
• The arm geometry changes less when temperature fluctuates. Less structural change means less measurement drift.

Automated thermal compensation

AccuArm's thermal compensation system monitors temperature continuously and adjusts measurement calculations in real time — correcting for thermal expansion in both the instrument and the part simultaneously.

Measurements taken at different times of day, under different temperature conditions, remain comparable and reliable.

Configuration and Accuracy

AccuArm is available in three accuracy grades and seven working lengths, in both 6-axis and 7-axis configurations.

6-axis suits standard probing applications where the probe approaches features from consistent directions.

7-axis adds one degree of freedom at the wrist — essential for measuring features inside confined spaces, deep holes, or complex assemblies where the probe must approach from multiple angles. LDIA (articulated location error) is the key specification to review for 7-axis applications.

Selected specifications:

S Grade — Highest accuracy

E Grade — Standard industrial

C Grade — Extended Length

All AccuArm systems are tested against ISO 10360-12. SCANOLOGY's calibration laboratory holds CNAS ISO/IEC 17025 accreditation — equivalent to A2LA, UKAS, and all ILAC MRA signatory bodies worldwide.

Software Compatibility

AccuArm works natively with:

DefinSight — SCANOLOGY's all-in-one metrology platform for scanning, inspection, GD&T analysis, and reporting.

PolyWorks — Industry-standard metrology software for advanced inspection workflows.

Verisurf — CAD-based measurement and reporting platform widely used in aerospace and automotive manufacturing.

Ready to see AccuArm in your environment? Explore full specifications → or contact our engineering team to discuss your measurement requirements.

For a detailed explanation of AccuArm's accuracy parameters — SPAT, EUNI, PFORM, PSIZE, and LDIA — and what they mean in practice: Understanding SCANOLOGY AccuArm Specifications →