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Mastering the Lathe and Milling Machine
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Why are precision gage blocks (Jo blocks) typically manufactured with a mirror-like surface finish?
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50-50
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Audience
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A
To allow them to stick together through molecular attraction and air pressure when wrung.
B
To prevent them from absorbing ambient light and heating up during measurements.
C
To make surface scratches easily visible to the naked eye.
D
To prevent cutting fluids and oils from adhering to their surfaces.
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