Spi CMS160712060 Electronic Bore Gage 3 to 3.5 in

Product Description

The SPI CMS160712060 is an electronic bore gage designed for precision internal diameter measurement in machining, engine rebuilding, and manufacturing quality-control applications. It covers a measuring range of 3 to 3.5 inches with a resolution of 0.0001 inches and accuracy up to 0.0002 inches. The gage features a 3-point solid carbide head for consistent contact and wear resistance, and includes an integrated indicator with a pistol-grip handle for single-handed operation. A licensed machinist or metrologist installs and operates this instrument in shop and field inspection environments.

This bore gage is suited for residential and commercial machine shops, engine rebuilding facilities, and precision manufacturing lines where bore tolerances must be held tight. The pistol-grip design allows right- or left-hand viewing and reduces operator fatigue during repetitive measurements. The unit ships complete with a battery (CR2032), accessories, and is furnished in a fitted carrying case. A gage depth of 4.48 inches supports measurement in standard cylinder bores and blind holes encountered in engine and hydraulic component work.

Key Features

• Measuring range of 3 to 3.5 inches with 0.0001 inches resolution and 0.0002 inches accuracy
• 3-point solid carbide head for durability and consistent contact across the bore
• Pistol-grip handle enables single-handed operation with right and left hand viewing
• Automatic shut-off conserves battery life during extended shop use
• Furnished in a fitted case for protected storage and transport
• 2-year manufacturer warranty

Compatibility

Designed for use in any application requiring precision internal diameter measurement in the 3 to 3.5 inch range, including engine cylinder bores, hydraulic cylinders, and machined bore features requiring close-tolerance verification.

Installation Notes

This instrument is operated by machinists, metrologists, and precision measurement technicians. Before use, zero the gage against a calibrated ring gage or setting master of known diameter within the measurement range. Store the gage in its fitted case when not in use to protect the carbide contacts. Do not exceed the stated measuring range, as forcing the contacts beyond their design limits can damage the 3-point head assembly.