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What are the different Flatness Testing Methods for Surface Plates?
2K views · Jan 6, 2022
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As we all know, Surface plate is a working standard. But how actually we can measure the flatness of the surface plate to ensure it can be used as a working standard.

There are various methods are available for flatness testing. We have listed them below.
1. Using Two footed twisting Gauge/Three footed twisting Gauge
2. Spirit Level Method
3. Auto Collimator
4. Beam Comparator
5. Laser Beam
6. Comparing with Liquid surface
7. Interference Method
Read the full article: https://extrudesign.com/flatness-testing-methods-surface-plates/

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