Precision, Measurement & Control

Gauge blocks

Developed in the late 19th century

Gauge blocks provide accurately finished reference lengths for measurement and inspection. Blocks can be joined by wringing their flat surfaces together to build up selected dimensions.

About this artifact

Gauge blocks provide accurately finished reference lengths for measurement and inspection. Blocks can be joined by wringing their flat surfaces together to build up selected dimensions.

Sources & image credits

Reference article ↗

Historical photograph, illustration or documented physical example; the source caption identifies the depicted object.

Image: GaugeBlockAccessorySet.jpg
Creator: Glenn McKechnie
License: CC BY-SA 3.0

Original image & attribution ↗ · License terms ↗

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Museum collections & surviving sites

gauge block

National Museum of American History · Washington, DC, USA
Museum catalogue object

The institutional catalogue records this object. Its title and object type identify the scope of the surviving material; consult the record for provenance and access.

Institutional source ↗

Checked 2026-10-29. A collection record does not guarantee current display, operation or public access.

Books & further reading

The Perfectionists

Simon Winchester · Paperback
ISBN 9780062652560

An accessible history of precision engineering, machine tools and measurement, explaining why reliable dimensions matter to working machinery.

View on Amazon ↗ · Book information ↗