Mitutoyo 12AAC741 Surface Roughness Gage Stylus

Product Description

The MITUTOYO 12AAC741 is a replacement stylus designed for use with Mitutoyo surface roughness and contour measuring instruments. The stylus is the contact element that traces the workpiece surface, transmitting micro-level profile data to the instrument for Ra, Rz, and related roughness parameter calculations. Licensed metrologists, quality control technicians, and precision machining professionals install and replace this component during routine maintenance or when stylus wear affects measurement accuracy. At 0.5 pounds and compact dimensions of 7 inches long by 4 inches wide by 2 inches tall in packaging, it is a direct accessory replacement stocked for bench and shop metrology setups.

This stylus is compatible with a defined range of Mitutoyo surface measurement systems used in manufacturing, toolroom, and quality lab environments. It fits both portable surface roughness gages and larger CNC-driven contour measuring systems, making it applicable across light production shops and high-precision metrology labs alike. Typical installation involves a scheduled stylus swap during instrument calibration cycles or following a detected drop in measurement repeatability.

Key Features

• Direct OEM replacement stylus for Mitutoyo surface roughness and contour gages
• Compatible with both portable SJ-series and CNC-driven SV-series instruments
• Compact and lightweight at 0.5 pounds for easy handling and storage
• Sold individually — package quantity of 1

Compatibility

Designed for use with the following Mitutoyo instruments: SJ-410, SJ-500, SV-2100, SV-3100, SV-3000CNC, SV-M3000CNC, SV-C3200, and SV-C4500.

Installation Notes

Stylus replacement on surface roughness and contour measuring instruments should be performed by a qualified metrologist or calibration technician familiar with the specific instrument model. Power down the instrument before removing or installing the stylus to prevent damage to the measurement arm or transducer. Handle the stylus tip with care — contact with hard surfaces or excessive lateral force can deform the tip geometry and invalidate measurements. Follow the instrument manufacturer service documentation for proper seating, torque, and post-installation verification procedures.