Mitutoyo 2514AB Dial Drop Indicator 0.5 in 0.0005 Grad

Product Description

The MITUTOYO 2514AB is a dial drop indicator designed for precision measurement in machining, inspection, and quality control applications. It provides a measurement range of 0.5 inches with a dial graduation of 0.0005 inches per division, allowing for highly accurate surface and feature comparisons. The 0-50 dial reading with a white dial face offers clear readability, and a built-in revolution counter tracks cumulative travel. Each revolution covers 0.05 inches of spindle travel. Accuracy is rated at 0.0005 inches and the unit meets ANSI/AGD standards. Licensed machinists, quality technicians, and tool room personnel are the primary users of this instrument.

This dial drop indicator is suited for use on surface plates, inspection fixtures, magnetic bases, and transfer-type measurement setups. It fits standard indicator holders and back-plunger-style mounting arrangements via its flat back design. The 3/8-inch stem diameter is compatible with common dovetail and collet-style indicator holders used in machine shops and inspection labs. The instrument is well-suited for runout checks, bore alignment, flatness verification, and comparative gauging tasks in both production and bench inspection environments.

Key Features

• 0.5-inch total measurement range with 0.0005-inch graduation for fine resolution readings
• Revolution counter for tracking cumulative spindle travel beyond one full rotation
• Flat back design for secure seating in standard indicator holders and fixtures
• 3/8-inch stem diameter compatible with common collet and dovetail-style holders
• White dial face with 0-50 reading scale for high-contrast readability
• Meets ANSI/AGD standards for dimensional gauging instruments

Compatibility

Designed for use with standard AGD Group 0 indicator holders, magnetic base arms, and back-plunger fixtures that accept a 3/8-inch stem diameter and flat back mounting configuration.

Installation Notes

Mounting and removal should be performed by a qualified machinist or metrology technician familiar with indicator setups. Secure the stem in the holder without over-tightening the clamping screw, as excessive clamping force can distort the stem and affect accuracy. Before use, verify that the contact point is properly threaded onto the spindle using the 4-48 thread specification. Zero the indicator against a known reference surface before taking comparative measurements.