Micrometers

Micrometers provide precision measurement of small dimensions down to 0.01 mm or 0.001 inch.  Outside micrometers measure external diameters, while inside micrometers and depth micrometers measure internal diameters and depths.  They are used in metalworking, engineering and machining.

What is a micrometer used for?
A micrometer is a precision measuring tool designed to measure very small dimensions, usually in the range of millimetres or thousandths of an inch. They are commonly used for checking the thickness, diameter, or depth of parts in engineering and machining.

What types of micrometers are available?
The main types are outside micrometers (for external dimensions), inside micrometers (for internal diameters), and depth micrometers (for slots, holes, or recesses). Digital versions provide instant readouts, while mechanical ones use a vernier or thimble scale.

How do I ensure accurate results when using a micrometer?
Handle it gently to avoid heat transfer from your hands affecting readings, use the ratchet or friction thimble to apply consistent pressure, and always check zero calibration before use. Keep the spindle clean and free of debris.