Mitutoyo 2776AB Dial Drop Indicator 0.0005 to 1 in

Product Description

The MITUTOYO 2776AB is a dial drop indicator designed for precise dimensional measurement in machining, inspection, and metrology applications. It delivers a measurement range of 0.0005 to 1 inch with a graduation of 0.0005 inches per division, providing resolution suitable for tight-tolerance work. The indicator features a 0-50 dial reading with a white dial face for clear readability and a flat back mounting configuration. Accuracy is rated at 0.0005 inches. The stem diameter is 3/8 inch, fitting standard indicator holders and magnetic bases used throughout machine shops, tool rooms, and quality control environments. Licensed machinists, metrologists, and quality inspectors are the primary users of this instrument.

This dial drop indicator is suited for surface plate inspection, fixture setup, runout measurement, and alignment tasks in both production and toolroom settings. Its 0.05-inch range per revolution keeps the dial sweep manageable for close-tolerance surface comparisons. The flat back design allows direct mounting to standard back plates and indicator holders commonly used on surface plates and machine tool setups. A measuring force of 2.50 N ensures consistent contact without distorting delicate workpiece surfaces.

Key Features

• Measurement range of 0.0005 to 1 inch with 0.0005-inch graduations for high-resolution readings
• 0.05-inch travel per revolution suits fine surface comparison and runout checks
• Flat back design compatible with standard indicator holders and back plates
• 3/8-inch stem diameter fits common magnetic base and indicator stand clamps
• White dial face with 0-50 reading for clear, low-error readability
• Measuring force of 2.50 N minimizes workpiece deflection during contact measurement

Compatibility

Designed as an OEM-style dial drop indicator in the Mitutoyo Series 2 product line. Fits standard 3/8-inch indicator holders, magnetic bases, and surface plate stands commonly used in machine shops and inspection departments.

Installation Notes

Installation is performed by machinists, metrologists, and quality technicians using a standard 3/8-inch indicator holder or collet clamp. Ensure the indicator stem is clamped securely without exceeding contact pressure that could damage the spindle mechanism. Before use, verify the spindle moves freely through its full range and that the dial face is zeroed at the reference point. This instrument is not calibrated from the factory; calibrate against a certified reference standard before use in inspection applications.