Measuring range	Jaw length	Rod length
3 - 50 mm	22 mm	188 mm
3 - 100 mm	42 mm	238 mm
3 - 150 mm	65 mm	288 mm

 

Digital calipers for arcs and radii are precision measuring tools designed to accurately detect internal and external radii, curvatures, fillets, and rounded profiles. Made of hardened stainless steel, they are equipped with fine jaws angled at 73°44’, specifically designed to access even the most hard-to-reach areas of machined parts, curved surfaces, or complex-shaped components. With a resolution of 0.01 mm or 0.0005”, these calipers allow for precise and immediate readings, in both millimeters and inches, adapting to various operational needs and international standards.

 

The digital tools for radii offer several integrated functions such as mm/inch unit conversion, zero setting, hold function to lock the reading, and on/off switch. These features enable quick, intuitive, and highly repeatable measurements, even on irregular parts or those with complex geometries. They are particularly suitable for applications requiring curvature or fillet checks, such as verifying transitions between cylindrical or concave surfaces.

 

Used by specialized technicians in quality control departments, metrology labs, mechanical workshops, stamping departments, and CNC production, digital calipers for arcs and radii are essential tools to maintain dimensional tolerances and ensure compliance with technical drawings. They are also chosen by toolmakers, assemblers, machine operators, and mold makers for their effectiveness in dimensional checks on finished parts, raw components, or prototypes.

 

Thanks to their combination of precision, durability, and versatility, these calipers are used across a wide range of industrial sectors: from precision mechanics to automotive, from aerospace to the manufacturing of tools and curved components. The solid hardened steel construction ensures wear resistance and long service life even in intensive production environments, while the ease of use makes them suitable for technical training in vocational centers. Wherever accurate analysis of radii or curvatures is required, these tools are an indispensable choice for dimensional control.