When flatness is called out on drawing. How many hits and how far away are each hit has to be? What is the proper way to manually very a flatness call out?
There is no single way to measure for flatness. It depends on the size of the feature, the size of the tolerance, the customer's requirements, etc. Aim for 'Adequate Coverage'.
Manually, you can use a known flat standard along with calibrated feeler gages. Depending on the part, you could set up on a granite and sweep the surface with an indicator.
There is no single way to measure for flatness. It depends on the size of the feature, the size of the tolerance, the customer's requirements, etc. Aim for 'Adequate Coverage'.
Manually, you can use a known flat standard along with calibrated feeler gages. Depending on the part, you could set up on a granite and sweep the surface with an indicator.
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