Mitutoyo 12AAB331 Standard Stylus 90° Tip 2µm Radius for Surface Roughness Measurement

The Mitutoyo 12AAB331 is a precision standard stylus designed for surface roughness measurement instruments. Featuring a 90-degree tip angle and an ultra-fine 2 micron (0.002mm) tip radius, this stylus delivers highly accurate surface texture analysis across a wide range of industrial metrology applications.

Engineered to Mitutoyo's exacting quality standards, the 12AAB331 is a direct-fit replacement and standard-use stylus compatible with the Mitutoyo SJ-400 Surftest series as well as other Mitutoyo surface roughness and contour measuring instruments including the SJ-410, SJ-500, SV-2100, SV-3100, SV-3000CNC, SV-M3000CNC, SV-C3200, and SV-C4500.

Key Features:

• Tip angle: 90 degrees
• Tip radius: 2µm (0.002mm) for fine surface detail capture
• Compatible with Mitutoyo SJ-400, SJ-410, SJ-500, and SV-series surface roughness instruments
• Designed for precise surface texture measurement per industry standards
• Genuine Mitutoyo replacement stylus ensuring measurement accuracy and repeatability

The 12AAB331 is ideal for quality control labs, manufacturing floors, and inspection environments where reliable surface finish measurement is critical. Using a genuine Mitutoyo stylus ensures consistent contact force response and tip geometry for repeatable Ra, Rz, and other roughness parameter readings.