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The portable measuring arm, or portable arm coordinate measuring machine (CMM) has become an important quality control tool at many manufacturing companies. With the flexibility to be used nearly anywhere on a manufacturing floor, from in-process checks to large-scale assembly to inside machine tools, measuring arms have the capability to deliver real-time feedback right at the point of production.

The first-time buyer, and even repeat buyers, may be overwhelmed by the variety of features, accessories, and capabilities available. Even those knowledgeable about CMM technology may find the conventions of measuring arms to be unfamiliar and confusing. It is the purpose of this article to provide insights about what to consider when sourcing a portable arm CMM, and specific things to look for as your organization makes this investment in quality and productivity.

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