Spi 13-726-5 Dial Test Indicator Base Kit 0.03 in

Product Description

The SPI 13-726-5 is a dial test indicator base kit designed for precision measurement tasks on milling machines and similar machine tool setups. The kit includes an SPI dial test indicator and a compatible import holder, giving machinists and tool room technicians everything needed to mount and begin taking readings. The indicator features a 0.03 inch total measurement range with a 0-15-0 bidirectional dial reading and a graduation of 0.0005 inches per division. The white dial face is 1.25 inches in diameter, offering clear readability in typical shop lighting conditions. This kit is suited for professionals who need a compact, ready-to-use indicator solution without sourcing the indicator and holder separately.

The 13-726-5 kit is used in machine tool environments where surface runout, workpiece alignment, and part positioning require close-tolerance verification. Its primary application is milling machine setups, where the holder mounts to a spindle, arm, or column to position the indicator tip against a reference surface. The 0-15-0 dial format allows the technician to read deflection in either direction from zero, which is standard practice for centering and tramming operations. General machining shops, tool and die operations, and precision fab environments are typical installation contexts.

Key Features

• 0.03 inch total measurement range with 0-15-0 bidirectional dial reading
• Dial graduation of 0.0005 inches per division for fine-resolution readings
• 1.25 inch diameter white dial face for easy readability
• Includes SPI indicator and import holder as a complete kit
• Designed to fit milling machines for alignment and tramming applications

Compatibility

Designed for use with milling machines as stated by the manufacturer. The included import holder is intended for use with the SPI dial test indicator supplied in this kit.

Installation Notes

Installation is typically performed by machinists or tool room technicians familiar with indicator mounting procedures. The holder should be securely clamped to the machine spindle, arm, or magnetic base before positioning the indicator tip against the reference surface. Ensure the machine is powered down and the spindle is locked before mounting or adjusting the indicator assembly. Avoid side-loading the indicator contact point beyond the rated measurement range to prevent damage to the internal mechanism.