Mitutoyo 12AAA220 Magnetic Stand Adapter SJ-301 SJ-210

Product Description

The MITUTOYO 12AAA220 is a magnetic stand adapter designed for use with Mitutoyo Surftest portable surface roughness testers. This accessory mounts the roughness gage to a magnetic base stand, keeping the instrument securely positioned during measurement tasks on ferrous workpieces and machine surfaces. The adapter measures 9.53 mm in overall length with a 9.50 mm overall diameter, making it a compact, purpose-built interface between the instrument and the stand. Metrology technicians, toolroom machinists, and quality control personnel are the typical end users for this type of accessory.

This adapter is intended for shop-floor and laboratory environments where consistent, repeatable surface roughness measurements are required. It is suited for use in manufacturing quality assurance, precision machining inspection, and surface finish verification workflows. The compact size allows it to be used in tight fixture setups where direct hand-holding of the tester is impractical or introduces measurement error.

Key Features

• Designed specifically for Mitutoyo SJ-301 and SJ-210 Surftest portable surface roughness testers
• Enables secure magnetic stand mounting for hands-free, stable gage positioning
• Compact profile: 9.53 mm overall length and 9.50 mm overall diameter
• OEM Mitutoyo accessory ensures proper fit without modification
• Sold individually — no additional hardware kit required

Compatibility

Compatible with the Mitutoyo SJ-301 and SJ-210 Surftest portable surface roughness testers. Intended for use with Mitutoyo magnetic base stands designed for Surftest instruments.

Installation Notes

Installation is performed by the instrument operator or metrology technician and requires no special tooling beyond what is supplied with the magnetic stand. Power down or switch off the surface roughness tester before attaching or removing stand accessories to avoid accidental stylus damage. Verify that the mating magnetic stand is rated for use with Surftest-series instruments before assembling. Handle the stylus assembly carefully during setup to prevent contact damage.