Micrometer - Inside & Outside

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Explore Our Micrometer Range

Widely used in the collection of pin-point accurate measurements from mechanical engineering machinery components, micrometers are a highly valuable and useful calibration tool used in a vast range of industries and fields.

HK Calibration Technologies proudly stocks a broad selection of micrometers for a variety of uses and applications. Whether you need an outside micrometer to measure wires, blocks, shafts or spheres, or an inside micrometer for measuring the diameter of holes, we’re sure to have the precision measuring tool you need to meet your specific needs.

Micrometers to Accommodate Every Need

We pride ourselves on being the home of the best selection of micrometers online.

  • Analog or digital micrometer
  • External or internal micrometer
  • Metric or imperial measurements

Key Benefits and Uses

  • Ensures accurate measurement of critical dimensions, helping reduce scrap and rework.
  • Enhances quality control by providing trusted verification of component size.
  • Offers versatility and coverage, from small‑scale precision gauges to large‑range micrometer sets.
  • Supports traceable calibration, enabling compliance with internal standards and audit requirements.
  • Provides durability and reliability for daily use in industrial and inspection environments.

Our experienced staff can assist you with finding the most suitable micrometer set for your specific needs. Browse our range online or place your order over the phone by calling 1300 309 881.

Frequently Asked Questions

A micrometer is a precision tool used to measure small dimensions such as the thickness, diameter, or length of an object with high accuracy. It’s commonly used in mechanical engineering, machining, and manufacturing for quality control and component verification.

Micrometers are used in industries like aerospace, automotive, precision engineering, metalworking, and manufacturing. They are essential for maintaining tight tolerances in parts and assemblies where even minor dimensional errors can affect performance.

The four main types of micrometers are:

  • Outside micrometer – measures external dimensions
  • Inside micrometer – measures internal diameters
  • Depth micrometer – measures hole or recess depths
  • Digital micrometer – provides digital readouts for high precision Each type serves specific dimensional measurement needs in various industries.

Digital micrometers generally offer higher ease of use and faster, error-free readings compared to analog (mechanical) micrometers. However, analog micrometers are more durable in rugged environments. Both types provide excellent accuracy, but digital is preferred for repeatability and data recording in modern quality control systems.

An external micrometer (outside micrometer) is used to measure the outer dimensions—such as the diameter or thickness—of an object. It’s commonly used in manufacturing, machining, and engineering to check parts with high accuracy, often within microns.

 An internal micrometer is designed to measure the inside diameters of holes, cylinders, pipes, and bores. It helps verify tolerance and concentricity, ensuring parts meet engineering specifications in mechanical and production applications.

An objective micrometer, often found in microscopes, is used to calibrate the field of view and measure small objects viewed under magnification. It helps determine accurate dimensions of microscopic samples, commonly used in laboratories and research settings.