Mitutoyo 1044AB Dial Drop Indicator 5mm Range Flat Back

Product Description

The MITUTOYO 1044AB is a dial drop indicator designed for precise dimensional measurement in machining, inspection, and quality control environments. It features a 0-100 dial reading with a 5.00 mm total measurement range and a dial graduation of 0.01 mm, giving technicians fine resolution for surface variation checks, runout inspections, and part alignment tasks. The flat back design allows stable mounting against flat reference surfaces. A revolution counter tracks full spindle rotations, reducing read errors during multi-revolution measurements. The glare-free, scratch-resistant crystal keeps the white dial face legible under shop lighting. Metrology professionals, machinists, and QC inspectors are the primary users of this instrument.

This indicator suits applications in machine shops, toolrooms, and manufacturing inspection stations. It is used for checking flatness, parallelism, runout, and part-to-part variation on both ferrous and non-ferrous workpieces. The 8.00 mm stem diameter and M2.5 x 0.45 thread size are standard for use with common indicator holders, magnetic bases, and transfer fixtures. Green limit markers are included to mark acceptable tolerance bands directly on the dial, supporting go/no-go inspection workflows. The compact 80.00 mm overall length fits tight setups without interfering with fixturing.

Key Features

• 0-100 dial reading with 0.01 mm graduation for fine resolution measurement
• 5.00 mm total range with 1.00 mm range per revolution
• Revolution counter reduces multi-revolution reading errors
• Flat back design for stable mounting on flat reference surfaces
• Glare-free, scratch-resistant crystal for clear dial visibility in shop conditions
• Includes green limit markers and protective plastic case
• Meets ISO and JIS standards for dimensional measurement instruments

Compatibility

Designed for use with standard indicator holders, magnetic bases, and transfer stands accepting an 8.00 mm stem diameter. The M2.5 x 0.45 contact thread is compatible with standard Mitutoyo-pattern contact points for dial drop indicators.

Installation Notes

This instrument is installed and used by machinists, metrologists, and quality control technicians. Secure the 8.00 mm stem in a calibrated indicator holder or magnetic base before use, ensuring the spindle axis is aligned perpendicular to the measured surface. Do not exceed the 5.00 mm measurement range or apply lateral force to the spindle, as either can damage the gear train. Handle the instrument carefully to avoid impacts that could affect calibration; verify calibration against a known reference before critical inspection work.