Measuring to High Precision
![Dwayne Barker](https://public.nrao.edu/wp-content/uploads/2013/09/gallery-images-largeGBengineering1_large.jpg)
Dwayne Barker is using a microscope to inspect and make measurements on a part. The microscope has a grid inside that can be used to measure the size of features on even our smallest machined components.
Credit: NRAO/AUI/NSF
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