Mitutoyo 1507A Dial Drop Indicator 0.125in Range

Product Description

The MITUTOYO 1507A is a dial drop indicator designed for precision measurement in machining, tooling, and metrology applications. With a 0.125 inch measuring range and a 0.0005 inch graduation, it delivers fine resolution suitable for runout checks, surface parallelism, and workpiece alignment. The 0-25-0 bidirectional dial face allows easy reading of deviation in either direction. The lug back mount keeps the indicator secure in standard indicator holders and fixtures. A built-in revolution counter tracks cumulative displacement across the full range. This instrument is used by machinists, tool-and-die technicians, and quality control inspectors.

The 1507A suits bench setups, surface plate inspection, machine tool alignment, and fixture verification in both job shop and production environments. Its compact 1-5/8 inch diameter white dial provides clear readability in tight workspaces. The 0.375 inch stem diameter fits standard indicator holders and magnetic base clamps. With ANSI/AGD Group 1 compliance, it meets the dimensional and performance standards expected in precision metrology work.

Key Features

• 0.125 inch measuring range with 0.0005 inch graduation for fine-tolerance inspection
• 0-25-0 bidirectional dial reading for direct deviation measurement in both directions
• Revolution counter tracks total displacement across the full range
• Lug back mount for secure fixture in standard indicator holders
• 1-5/8 inch white dial face for clear, high-contrast readability
• ANSI/AGD Group 1 compliant for standardized metrology use

Compatibility

Designed as an OEM-style precision drop indicator compatible with standard 0.375 inch stem diameter indicator holders, magnetic bases, and surface gauge fixtures conforming to ANSI/AGD Group 1 specifications.

Installation Notes

Installation and use of this indicator is performed by machinists, metrologists, and quality technicians. Secure the 0.375 inch stem firmly in the holder before taking measurements to prevent slippage that would affect accuracy. Zero the dial face against a known reference surface before beginning inspection. Avoid applying lateral force to the spindle, as this can affect measurement accuracy and cause premature wear to internal components.