Starrett 64603 Dial Test Indicator 0.01 in Horizontal

Product Description

The STARRETT 64603 is a horizontal-style dial test indicator designed for precision measurement in machining, inspection, and metrology applications. It delivers a maximum measurement range of 0.01 inches with a fine graduation of 0.0001 inches per division, making it suited for close-tolerance work where surface variation must be detected with high accuracy. The jeweled bearing movement reduces friction and wear, supporting repeatable readings over extended service life. The narrow body and angled head allow access to confined areas where standard indicators cannot reach. A satin chrome finish resists corrosion in shop environments. This indicator is installed and used by machinists, tool-and-die makers, quality control technicians, and precision measurement professionals.

The 64603 fits into horizontal indicator setups on surface plates, machine tool spindles, transfer fixtures, and CMM-adjacent manual inspection routines. The dovetail mount is the standard attachment method, compatible with common dovetail-style indicator holders and magnetic base accessories. The 0-5-0 bidirectional dial face allows the technician to read deviation in either direction from zero without reorienting the indicator. The included carbide contact point measures 13/16 inches (20.64 mm) in length with a 0.0787-inch (2.00 mm) ball diameter. A revolution count hand tracks cumulative travel across the 0.01-inch range per revolution.

Key Features

• 0.0001-inch graduation for fine-tolerance deviation measurement
• Jeweled bearing movement for low friction and long service life
• Dovetail mount compatible with standard indicator holders and magnetic bases
• 0-5-0 bidirectional red dial for positive and negative deviation reading
• Angled head and narrow body for access in confined measurement locations
• Adjustable and replaceable carbide contact point included

Compatibility

Designed as an OEM-style precision instrument for use with standard dovetail-mount indicator holders, arms, and magnetic base accessories common in machine shop and inspection environments.

Installation Notes

Dial test indicators of this type are set up by machinists and metrology technicians; no power source is required. Secure the dovetail shank firmly in the holder arm before use to prevent slippage during measurement. Avoid side-loading the contact point beyond the designed travel range, as this can damage the jeweled movement. Calibration and cleaning should follow the manufacturer service guidelines to maintain graduation accuracy.