As engineers sketch, they take periodic ratio to verify that the design maintains the appropriate ratio for the given scale.
What is a Scale?
Scale in engineering sketching or drawing can be defined as the ratio of the linear dimension of an element of an object as represented in the original drawing to the actual linear dimension of the same element of the object itself.
So therefore, as engineers sketch, they take periodic ratio to verify that the design maintains the appropriate ratio for the given scale.
Learn more about scale in sketching:
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