Spi 13-981-6 Electronic Bore Gage 0.4 to 0.7 Inch

Product Description

The SPI 13-981-6 is an electronic bore gage designed to measure internal diameters from 0.4 to 0.7 inches with a resolution of 0.00005 inches (0.001 mm) and accuracy up to 0.00025 inches. It includes an integrated electronic indicator and supports data output, making it suitable for use in precision machining, engine rebuilding, and quality control environments. The gage reaches a depth of 4 inches, allowing measurement in deeper bores where standard gages fall short. It ships with a fitted storage case, nine anvils, five spacers, and the CR2032 battery required for operation. Licensed machinists, engine builders, and metrology technicians are the typical users of this instrument.

This bore gage is suited for precision measurement tasks in machine shops, automotive engine rebuild facilities, and manufacturing quality control applications. It operates in both inch and metric modes and supports incremental and absolute measurement modes. The data output port allows readings to be logged directly to a compatible data collection system or SPC software, supporting documented inspection workflows. It is appropriate for use on cylinder bores, hydraulic cylinder housings, bushing bores, and similar internal-diameter features in the 0.4 to 0.7 inch range.

Key Features

• Measuring range of 0.4 to 0.7 inches covers small-bore precision applications
• Resolution of 0.00005 inches (0.001 mm) for fine-tolerance measurement
• Accuracy up to 0.00025 inches
• 4-inch gage depth for access to deeper bores
• Inch and metric display modes with incremental and absolute measurement
• Data output port for SPC and inspection documentation
• Auto shut-off and CR2032 battery included
• Furnished in a fitted storage case with nine anvils and five spacers included

Compatibility

Designed for use as a precision bore measurement instrument in any application requiring internal diameter measurement within the 0.4 to 0.7 inch range. Compatible with standard SPC data collection systems that accept electronic gage output.

Installation Notes

This gage is a precision metrology instrument, not an installed component. Handle with care and store in the furnished fitted case when not in use to protect the anvils and indicator from damage. Zero the gage using an appropriate setting ring or master before taking measurements. Avoid exposing the instrument to coolant, chips, or impact, as these can affect calibration and accuracy.