Description
The Mitutoyo 186-902 is a professional-grade precision radius gauge set designed for the exact measurement and verification of concave and convex radii. Engineered for rigorous quality control environments, this 26-leaf set provides a comprehensive measuring range from 0.5 mm to 13.0 mm. While sometimes referenced alongside electronic measurement tools in procurement databases, the 186-902 represents the pinnacle of mechanical tactile inspection, offering immediate, battery-free verification of fillet and radii dimensions on machined components.
Technical Specifications
Manufacturer: Mitutoyo
Model Number: 186-902
Measuring Range: 0.5 mm to 13.0 mm
Increment Step: 0.5 mm
Total Number of Leaves: 26
Leaf Configuration: Integrated Concave and Convex profiles
Checking Angle: 90° and 180° profiles
Material Composition: Hardened Stainless Steel
Surface Finish: Satin chrome finish for glare reduction
Locking Mechanism: Precision knurled clamp nut
Accuracy Standard: Mitutoyo Original Engineering specifications (±0.03 mm typical)
Weight: 150 g
Industrial Application
This radius gauge set is critical for tool and die makers, CNC machinists, and quality assurance inspectors. It is specifically utilized during the first-article inspection of injection molds, aerospace brackets, and automotive transmission components where exact fillet radii are required to prevent stress concentrations. The dual concave/convex leaf design allows operators to seamlessly check both internal corners and external curved surfaces without switching tools, ensuring high-throughput metrology.
Lifecycle and Procurement
Ensuring Technical Compatibility with standard metrology calibration procedures, the Mitutoyo 186-902 integrates effortlessly into ISO 9001 quality management systems. Built for decades of continuous shop-floor use, the hardened steel construction requires minimal maintenance beyond standard oiling and calibration verification. We maintain optimized inventory levels to ensure a minimized Lead Time for critical facility upgrades and the immediate replacement of worn metrology equipment.
Key Attributes
Place of origin: Japan
Customized support: OEM, ODM
Brand name: Mitutoyo
Warranty: 1 years
Model number: 186-902
Range: 0.5 to 13 mm
Power: Electronic
Packaging and Delivery
Selling Units: Single item
Single package size: 35X20X8 cm
Single gross weight: 1.500 kg








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