Correct option is A
The symbol ∅ (phi) is commonly used in engineering and technical drawings to denote the diameter of a circular object. When written as ∅7, it indicates that the diameter of the circular feature is 7 units.
The symbol ∅ (phi) is commonly used in engineering and technical drawings to denote the diameter of a circular object. When written as ∅7, it indicates that the diameter of the circular feature is 7 units.