INSIZE radius gauge set model 4801-16 — curved radius gauges, range 7.5–15 mm

INSIZE radius gauge set model 4801-16 is a curved radius measuring tool designed to check and compare fillet and concave radii on components. The set contains a selection of curved gauges that cover the range from 7.5 mm to 15 mm, enabling visual and tactile inspection of profiles, templates and workpieces in metalworking and machining environments. The gauges are intended for quick verification of radius conformity during manufacturing, maintenance and quality control operations.

Advantages

The curved radius gauges provide a simple and reliable method for assessing internal radii without the need for complex measuring equipment. Their continuous range from 7.5 to 15 mm allows matching of common fillet sizes used in toolmaking and part fabrication. The hand-held form facilitates fast, on-the-spot checks and reduces setup time in inspection routines. The set supports both visual alignment and tactile feel to confirm radius fit and detect deviations.

Suitable for

• Inspection of fillets and concave radii on machined parts
• Quality control checks in production and maintenance
• Toolmaking and die inspection
• Template comparison and profile verification

Key specifications

• Radius coverage: 7.5 mm to 15 mm
• Gauge type: curved radius gauges for internal radii
• Intended use: visual and tactile inspection of radii and profiles
• Typical applications: metalworking, machining, toolmaking, quality control

How to use

Select the gauge from the set that most closely matches the expected radius on the workpiece. Place the curved edge of the gauge into the fillet or concave area and check for uniform contact along the curve. Use visual alignment and feel to determine whether the gauge sits flush with the surface; gaps indicate a larger radius, while point contact indicates a smaller radius. Repeat the comparison with adjacent gauges if necessary to refine the match. Clean contact surfaces before measurement to avoid false readings caused by debris or burrs.

Usage recommendations

Handle gauges with care to preserve edge accuracy; store the set in its protective case when not in use. For repeatable inspection results, ensure the workpiece surface is free of chips, coolant residue or oil. When higher-accuracy quantification is required, use the gauges for quick identification then verify dimensions with calibrated measuring instruments.