Portable articulated CMMs, also commonly known as measurement arms, are 3D measurement devices developed in response to growing need for a probing solution that provided more portability and flexibility than a fixed CMM. Portable measurement arms determine and record the location of a probe in 3D space and report the results through software. The arm calculates the exact position of the probe at each point through embedded encoders on each axis (or joint) in the arm.
Measurement arms are available in multiple working volumes, typically from 4 feet to 12 feet (with a radial reach from 2 to 6 feet in any direction). They are also characterized by the number of rotational axes – arms typically come in 6 or 7-Axis configurations, with 6-Axis models used in high accuracy, hard probing applications and 7-Axis models used when additional articulation is needed for use with laser scanning attachments and specialty probes.
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