National Physical Laboratory

Dimensional Dimensional FAQs

Dimensional metrologists at NPL provide a wide range of services, facilities and expertise to support UK manufacturing, science and the metrology community.

General

Accreditation

International

Standards

Temperature

Tolerancing

CMMs

A manufacturer will calibrate a CMM and produce an error map that corrects for the various geometric errors in the machine. When delivered an acceptance test will be carried out to verify that it meets its specification. This verification should be repeated periodically, in addition interim checks should be carried out.

End Standards (gauge blocks, length bars)

Screw Threads

Surface Texture

Optical

Registration

Please note that the information will not be divulged to third parties, or used without your permission

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