Mitutoyo 178-397-2 Replacement Detector for Surface Roughness Tester - SJ-410

The Mitutoyo 178-397-2 is a precision replacement detector assembly designed specifically for SJ-410 surface roughness tester models. This retractable detector features a 4mN measuring force with a 90-degree, 5-micron radius diamond stylus tip for accurate surface texture measurement.

Key Features:

• 4mN measuring force for consistent, repeatable measurements
• 90-degree diamond stylus with 5-micron tip radius
• Retractable detector design protects stylus during handling
• Reinforced spring clip mechanism for secure attachment
• Compatible with SJ-410 and SJ-401 surface roughness tester models

Important Note: This detector assembly does not include the skidded nose piece, which must be ordered separately if needed.

Mitutoyo detectors are precision components manufactured to strict tolerances, ensuring accurate surface finish measurements across a wide range of materials and applications. The retractable design helps prevent stylus damage during setup and storage, extending the service life of this critical measurement component.