Selected Publications 

Selected Publications is a web-based collection of publications about dimensional metrology.

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Gage Block Flatness and Parallelism Measurement; NBSIR 73-239; 1973

Beers, J.; Tucker, C.

NBS Internal Report 73-239; 8p. August 1973.

Flatness; gage blocks; interferometry; length measurement; parallelism.

Geometric properties of gage blocks are important in many length measurement applications. Methods are described for measuring the flatness of gaging faces and the parallelism between opposing gaging faces. These methods, used for many years, employ interferometers and electro-mechanical gage block comparators.

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