Mitutoyo 2972AB Dial Drop Indicator 50-0-50 Flat Back

Product Description

The MITUTOYO 2972AB is a dial drop indicator designed for precision dimensional measurement in industrial and metrology applications. It features a 50-0-50 bidirectional dial reading with a graduation of 0.01 mm and an accuracy of 0.04 mm, making it suitable for comparative measurements, runout checks, and surface deviation work. The flat back design allows secure mounting against reference surfaces or indicator holders. The 57 mm white dial face provides clear readability under shop conditions. Licensed metrologists, machinists, and quality control technicians are the primary users of this instrument.

The MITUTOYO 2972AB is used in machine shops, quality labs, and manufacturing environments where repeatable comparative measurement is required. Its drop-style spindle action suits vertical measurement setups, surface plate work, and fixture-based inspection routines. The 8 mm stem diameter fits standard indicator holders and magnetic bases commonly found in toolroom and production environments. It is appropriate for both bench use and in-process gauging on manual or light CNC equipment.

Key Features

• 50-0-50 bidirectional dial reading for positive and negative deviation measurement
• 0.01 mm dial graduation for fine resolution comparative work
• Dustproof and shockproof construction for shop-floor durability
• Flat back design for stable mounting on indicator stands and holders
• 8 mm stem diameter fits standard toolroom indicator holders and magnetic bases
• Compliant with ISO and JIS measurement standards

Compatibility

Designed as an OEM-style drop indicator compatible with standard 8 mm stem indicator holders, magnetic base clamps, and dial indicator fixtures used in general metrology and machine shop applications.

Installation Notes

Installation is performed by machinists, metrologists, or quality technicians using a standard indicator holder or magnetic base with an 8 mm collet or clamp. Secure the stem without overtightening the clamping screw to avoid distorting the stem and affecting spindle travel. Verify that the spindle moves freely through its full range before zeroing the dial. Handle the instrument carefully to preserve calibration and avoid impact damage to the dial mechanism.