Mitutoyo 900929 Magnetic Drop Indicator Back Agd 3 4

Product Description

The MITUTOYO 900929 is a magnetic drop indicator back designed as a replacement or special-application accessory for dial indicators. The back plate mounts to the rear of a dial indicator body, providing the magnetic interface needed to seat the indicator securely on a magnetic base or transfer stand. At 44mm in diameter and 8mm thick, it is sized to fit AGD Group 3 and Group 4 indicator bodies. Licensed metrology technicians, machinists, and quality-control professionals install this component when the factory back is damaged, lost, or when a specific mounting configuration is required.

This back is suited for use in machine shops, inspection departments, and toolroom environments where AGD-standard dial indicators are in regular service. It is appropriate for both original equipment replacement and special-application setups where the standard indicator back is not compatible with the intended mounting surface or fixturing arrangement. It is sold individually.

Key Features

• Magnetic drop-style back provides secure seating on compatible magnetic bases and stands
• 44mm back diameter matches AGD Group 3 and Group 4 indicator body standards
• 8mm back thickness maintains proper indicator body geometry after replacement
• Direct OEM replacement sourced from MITUTOYO for assured dimensional accuracy
• Sold as a single unit, suitable for one-off replacement or special-application builds

Compatibility

Designed for use with AGD Group 3 and AGD Group 4 dial indicators requiring a magnetic drop indicator back.

Installation Notes

Installation is typically performed by a machinist or metrology technician familiar with dial indicator disassembly. Remove the indicator from any active setup and ensure the indicator body is fully supported before removing the existing back. Follow the indicator manufacturer's service guidance for back removal and seating to avoid damaging the indicator mechanism or bezel. Do not apply excessive force when seating the replacement back, as indicator bodies and their components are precision-machined and sensitive to distortion.