Measure bore diameter directly. These gauges give you the actual diameter, unlike a dial bore gauge, which only shows the variation from a set measurement. An LCD display makes the diameter easy to read. They measure deeper into smaller holes than inside hole micrometers. To test holes of different sizes, swap among the included anvils. Each anvil has two contact points that detect issues with roundness and taper and a flat bottom for stability in blind holes. For repeatable go and no-go tests, set upper and lower tolerances. A bar indicator on the display shows whether your measurement is within bounds, making test results quick to check.

An SPC data output allows you to connect these gauges to a computer or data processor to analyze data and monitor measurements in real time. A zero-set button lets you start measuring at any point. All have zero-position memory, also known as absolute (ABS) positioning, which retains the measuring position when the gauge is turned off. These gauges have alarms to warn you about various issues, including a low battery and setting errors.

Extension rods (sold separately) lengthen the stem of your gauge to reach farther into deep bores.

Gauge blocks (sold separately) come in eight different metric sizes for calibrating your bore gauge.

Data cables (sold separately) connect your gauge to your PC to send data.