Inside - 3-Point

7 products

The Inside 3-Point Micrometer collection is designed for precision measurement of internal diameters with superior accuracy and repeatability. Featuring three evenly spaced anvils, these micrometers ensure self-centering alignment within bores, reducing operator error and delivering consistent results. Ideal for machinists, quality inspectors, and manufacturers, these instruments are essential for industries where precise internal dimensioning is critical. Available in various measuring ranges, they provide versatility for different applications, from small components to larger industrial parts. Constructed from hardened steel with finely finished surfaces, they guarantee long-lasting durability.

Frequently Asked Questions

The three-point contact system automatically centres itself within the bore, providing a more stable and repeatable measurement; HK Calibrations recommends these for identifying "tri-lobed" or out-of-roundness errors that a two-point gauge might miss.

Before use, the tool must be checked against a certified setting ring; HK Calibrations provides high-precision master rings to ensure your micrometer is zeroed correctly for critical Australian manufacturing tolerances.

Many of the professional models at HK Calibrations feature extended anvils or a "blind hole" design, allowing technicians to take accurate readings right to the base of a cylinder or recessed housing without interference.

Digital models offer faster data collection and an easy-to-read LCD, reducing human error; HK Calibrations stocks both varieties to suit preferences for either electronic data logging or the traditional "feel" of a mechanical thimble.

Yes, HK Calibrations offers comprehensive calibration services for both the micrometers and their setting rings, ensuring your measurement process is fully compliant with ISO and Australian quality standards.

To prevent measurement drift, it is vital to keep the anvils free of oil and debris; HK Calibrations suggests a light wipe with a precision cleaner after use to ensure the contact points remain sharp and free from corrosion in humid workshop environments.