DIAL INDICATOR - SERIES 3
MITUTOYO

DIAL INDICATOR – SERIES 3

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Clear Inspection: DIAL INDICATOR - SERIES 3 Guide

Reading small dial faces from a distance causes eye fatigue and increases measurement interpretation errors. Standard indicators often lack the face diameter needed for quick visual checks across large machining setups. The DIAL INDICATOR - SERIES 3 resolves this visibility challenge by combining a large-diameter bezel with extended measuring range capabilities.

This guide explores how integrating a Series 3 dial indicator elevates accuracy across your workshop.

What Is the DIAL INDICATOR - SERIES 3?

The Series 3 is a large-face analog measuring instrument manufactured by Mitutoyo for heavy-duty inspection.

Featuring an enlarged 78 mm (3.07 in) outer bezel diameter, this gauge offers enhanced readability. Technicians use this indicator to measure shaft runout, surface flatness, and axial displacement across wide mechanical assemblies effortlessly.

DIAL INDICATOR - SERIES 3 for long-range high-visibility measurement, AI generated

Key Operational Advantages

Upgrading to a Series 3 dial indicator delivers clear technical benefits for quality inspectors:

  • Large Dial Face: Oversized display face allows quick, effortless reading from extended viewing distances.

  • Extended Measuring Range: Offers long travel strokes up to 30 mm or 1 inch for deep stroke testing.

  • Shockproof Mechanism: Specialized gear design protects internal movements against sudden spindle impacts.

  • Coated Crystal Glass: Scratch-resistant crystal lens with anti-glare coating prevents shop light reflections.

Common Workshop Applications

Machinists and quality technicians rely on Series 3 dial indicators for critical daily tasks:

  1. Large Machinery Alignment: Measure runout on large engine flywheels, heavy turbines, and machine spindles.

  2. Deep Deflection Testing: Check structural deflection on large castings under mechanical load tests.

  3. Machine Tool Setup: Align long travel beds on heavy-duty milling and planing machines accurately.

  4. Fixture Calibration: Mount on custom inspection jigs to monitor comparative component variations.

How to Measure in 4 Easy Steps

Follow these simple steps to perform accurate inspection routines:

  1. Clean Contact Surfaces: Wipe the workpiece surface and contact point using clean alcohol wipes.

  2. Mount the Gauge: Clamp the stem or back lug securely to a rigid magnetic stand.

  3. Set Zero Position: Lower the contact point onto your test part and rotate the bezel to align zero.

  4. Record the Displacement: Traverse your workpiece and observe pointer movement across the large scale.

Final Thoughts

The DIAL INDICATOR - SERIES 3 converts complex, long-range checks into easy visual routines. By combining clear visibility with durable construction, this high-precision tool protects product quality across your manufacturing facility.

Large diameter dail face for easy reading Face diameter 78mm Both stem and spindle made of high strength quench hardened stainless steel Available range and graduation
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