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Error budget: Compound slide (stacked) vs. compound table (planar guides)

In an error budget, a conventional compound table (KT) was compared to a compound slide (KS) of the same size. The planar guiding reduces the standard uncertainty considerably. By using a guiding surface of granite, the advantage of the planar guide is particularly felt and the standard uncertainty U (k=2) is again reduced by half.

Compared to a conventional compound table of a similar price, the position uncertainty can be reduced by 70%.

 

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