High-Precision Dial Test Indicator for Accurate Measurement – Acro Enterprise

dial test indicators

Dial Test Indicators – High-Precision Measurement for Fine Inspection

Dial test indicators are precision instruments used to measure small deflections, deviations, and runout in mechanical components. Unlike standard dial indicators that detect movement along the spindle axis, dial test indicators measure displacement perpendicular to the contact point—making them ideal for checking surface flatness, roundness, and alignment.

Equipped with a sensitive lever-style probe and finely graduated dial, these tools are essential in toolrooms, machine shops, and metrology labs where supreme accuracy and consistency are critical for fine inspection tasks.

 Key Features of Dial Test Indicators

Fine Graduation

Offers high resolution for accurate measurements.

Sensitive Lever Probe

Ideal for measuring minute deflections.

Smooth Needle Movement

Ensures precision and reliability.

Adjustable Bezel

Easy zero-setting for reference measurements.

 Applications of Dial Test Indicators

  •  Tool & Die Making: Verifying die alignment and surface finish
  •  Machine Tool Setup: Tramming milling machine spindles and aligning vises
  •  CNC Calibration: Checking workpiece positioning and fixture alignment
  • Inspection Labs: Surface flatness and concentricity measurements
  •  Quality Assurance: Detecting geometric deviations and dimensional errors
  •  Automotive & Aerospace: Ensuring parts meet critical tolerances

 How to Use Dial Test Indicators

  1. Secure Mounting: Attach the indicator to a magnetic stand or testing fixture.
  2. Zero the Dial: Adjust the bezel so the needle aligns with zero.
  3. Measure Deviation: Move the part or tool and observe needle deflection.
  4. Interpret Reading: The deflection indicates the amount and direction of the deviation.

Technical Specifications

Feature Details
Measuring Range 0–0.8 mm / 0–0.03″
Graduation 0.01 mm / 0.0005″
Contact Point Carbide-tipped or ruby-tipped options
Dial Diameter 30–40 mm (varies by model)
Reading Type Balanced or Continuous
Mounting Type Dovetail or stem mount
Body Material Stainless steel or aluminum alloy
Shock Resistance Anti-shock mechanism included

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