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White dial test indicator, 1.25 inch face, mechanical movement, dovetail mount included

Starrett

Starrett 3808AC Dial Test Indicator 1.25" White

SKU CH-N6B0-B8KHT

A 1.25 inch white-face mechanical dial test indicator with 0.008 inch range and 0.0001 inch graduations, supplied with dovetail mount attachments

  • White dial with 0-4-0 reading for clear visibility
  • 25" dial size provides easy-to-read measurements
  • .0001" graduations deliver precise resolution
  • Includes .078" and .156" contact points for versatility
  • Dovetail mount attachments enable flexible positioning

Precision Measurement Tool

The Starrett 3808AC is a mechanical horizontal dial test indicator built for machinists, toolmakers and quality inspectors who need reliable run-out and alignment checks. Its 1.25 inch white dial with 0-4-0 reading provides clear visibility in workshop lighting.

Upgrade From Basic Indicators

This model replaces simpler plunger-style gauges when angular access or tighter graduation is required. The jump is worth it when work demands 0.0001 inch resolution and a 0.008 inch range per revolution for comparative measurements.

Capacity And Headroom

The indicator travels 0.008 inch total with contact points of 0.156 and 0.078 inch diameter included. It comfortably handles small-deflection tasks such as centring workpieces or checking surface flatness, and runs out when larger total travel or digital output is needed.

Highlights

  • White dial with 0-4-0 reading for clear visibility
  • 25" dial size provides easy-to-read measurements
  • .0001" graduations deliver precise resolution
  • Includes .078" and .156" contact points for versatility
  • Dovetail mount attachments enable flexible positioning

Specifications

BrandSTARRETT

Questions about this item

What dovetail mounting options come with the 3808 indicator?

The set includes dovetail mount attachments that accept the indicator's integral dovetail, allowing you to clamp it to a magnetic base, height gauge or surface plate without extra hardware.

How do I zero the 0-4-0 dial before taking a reading?

Rotate the bezel until the needle points at the zero mark on the white 1.25 in dial, then lock the bezel; forgetting to lock it is the step most users miss and causes the zero to shift during measurement.

When should the .156 in and .078 in contact points be replaced?

Replace either contact point when the ball shows visible wear, flat spots or corrosion, because a damaged ball changes the effective length and introduces error beyond the .0001 in graduation.

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