Mitutoyo 1803AB-10 Dial Drop Indicator 0.025 in Range

Product Description

The MITUTOYO 1803AB-10 is a dial drop indicator designed for precision dimensional measurement in machining, tooling, and quality control applications. It covers a measurement range of 0 to 0.025 inches with a graduation of 0.0001 inches per division, delivering an accuracy of 0.0001 inches. The indicator features a jeweled bearing mechanism for smooth, repeatable stylus travel and a shockproof construction that holds up in production environments. A revolution counter tracks full stylus cycles, and the 0-5-0 dial reading format allows bidirectional deviation checks from a set zero point. The white dial face measures 40 millimeters in diameter for clear readability at the bench or machine.

This indicator is suited for use in precision metrology tasks including surface plate inspection, machine tool setup, fixture alignment, and incoming part verification. It is a standard tool for machinists, quality technicians, and toolroom professionals working in both job shop and production environments. The flat back mounting style and 3/8-inch stem diameter allow secure seating in most standard indicator holders and magnetic bases. The unit ships with green limit markers and a protective plastic case.

Key Features

• Measurement range of 0 to 0.025 inches with 0.0001 inch graduation
• Accuracy of 0.0001 inches, meeting ANSI/AGD standards
• Jeweled bearing construction for smooth, consistent stylus movement
• Shockproof design for durability in shop environments
• Revolution counter for tracking full-cycle stylus travel
• Includes green limit markers and a plastic carrying case

Compatibility

Designed as an OEM-style drop indicator compatible with standard 3/8-inch indicator holders, magnetic bases, and surface plate stands conforming to AGD Group 0 specifications.

Installation Notes

Installation and setup should be performed by a qualified machinist or quality technician familiar with precision measuring instruments. Secure the 3/8-inch stem firmly in the holder to prevent movement during measurement. Avoid side-loading the stem or dropping the indicator, as impact can affect calibration. Verify zero and re-calibrate against a known reference standard before use in a critical inspection process.