Instruments is used for checking flatness and squareness of surfaces
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14
Answer: micrometer screw guage
Explanation:because it is used to measure small things
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9
Answer:
"Micrometer screw gauge" is used for checking "flatness and squareness" of surfaces.
Explanation:
There are several methods to calculate the surface's flatness. One of best method is a "Monochromatic Sodium Light Unit" to calculate the flatness of the surface. This is the most accurate method to in flip industry to identify the flatness of the surface.
The squareness of the surface is calculated by the "minimum standard separation" of two parallel planes from the reference axis.
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