Starrett 12488 Dial Test Indicator 0.008 in Horizontal

Product Description

The STARRETT 12488 is a horizontal-style dial test indicator designed for high-precision measurement in machining, toolroom, and inspection applications. It covers a maximum measurement range of 0.008 inches with a dial graduation of 0.0001 inches, making it suitable for tasks that demand fine tolerance verification. The 0-5-0 balanced dial reading allows the technician to read deflection in either direction from zero without repositioning. A jeweled movement and precision gear-driven design contribute to repeatable, accurate readings. The satin chrome finish and high-contrast white dial improve readability under shop lighting conditions. Machinists, quality control inspectors, and toolmakers are the primary users of this instrument.

The STARRETT 12488 is used in machine shops, manufacturing facilities, and inspection labs where workpiece runout, alignment, surface variation, or part geometry must be verified to tight tolerances. The dovetail mount is the industry-standard attachment method for dial test indicators on magnetic bases, indicator holders, and surface plate setups. The narrow body style makes it practical in confined setups where clearance is limited. The contact point reverses automatically, and the adjustable, replaceable contact point accommodates different measurement scenarios without requiring a separate indicator. This indicator ships with two dovetail clamps, a contact point, and a protective case.

Key Features

• 0.008 inch maximum measurement range with 0.0001 inch graduation for fine tolerance work
• Jeweled movement with precision gear-driven design for consistent, repeatable readings
• 0-5-0 balanced dial allows bidirectional deflection reading from a single zero reference
• Dovetail mount is compatible with standard indicator holders and magnetic base arms
• Contact point reverses automatically and is field-replaceable without special tooling
• Narrow body design improves access in tight setups and fixtures
• Satin chrome finish on housing with high-contrast white dial face

Compatibility

Designed for use with standard dovetail-style indicator holders, magnetic base arms, and surface plate setups common in toolroom and inspection environments. Belongs to the STARRETT Series 3908 dial test indicator family.

Installation Notes

Dial test indicators are installed by qualified machinists, toolmakers, or metrologists using a dovetail clamp secured to a compatible holder or arm. Ensure the dovetail clamp is snug before taking readings to prevent indicator shift during measurement. Avoid side-loading the contact point beyond the rated range, as overtravel can damage the jeweled movement. Handle the instrument carefully; do not drop or impact the dial body.