Telescoping Bore Gauge Set, 8–150 mm

Check internal diameters in bores, holes, slots or recesses with a spring-loaded telescoping gauge set. The self-centering contact plungers help take a repeatable internal measurement that you can then read with a compatible micrometer or caliper.

Measure internal features with a matching micrometer

✅ Use the gauge by inserting it into the opening, allowing the contacts to seat, then locking and measuring the gauge with a separate measuring instrument.

✅ The listing gives an 8–150 mm range, up to 6 inches of depth and 0.1 mm accuracy; verify these figures against the specific gauge and your measurement method.

✅ Choose the four-piece or six-piece set option.

✅ Contact ends are described as heat-treated, precision-ground tool steel with constant spring tension.

Use the gauge by inserting it into the opening, allowing the contacts to seat, then locking and measuring the gauge with a separate measuring instrument. The listing gives an 8–150 mm range, up to 6 inches of depth and 0.1 mm accuracy; verify these figures against the specific gauge and your measurement method.

Choose the four-piece or six-piece set option. Contact ends are described as heat-treated, precision-ground tool steel with constant spring tension. A micrometer or caliper is not stated as included, so check the package contents before starting a measurement job.

Specifications: telescoping internal gauge set; 8–150 mm stated range; 0.1 mm stated accuracy; four- or six-piece variants; use with a separate micrometer or caliper.

Select the set size you need and confirm your measuring instrument covers the required range.