Question 295General Subjects - Assistant Engineer

The correct answer is A) All surfaces are to be machine finished. The blueprint symbol shown in the illustration GS-0028 represents a machined finish, indicating that all surfaces of the part should be machined to the specified tolerances and surface finish requirements. This is a common blueprint symbol used in engineering drawings to specify the manufacturing process for a part. The other answer choices are incorrect because they do not accurately represent the meaning of the symbol shown in the illustration. B) A groove must be machined, C) The thread form to be machined, and D) The surface should be finished with a welded overlay are not the correct interpretations of the symbol depicted in the illustration.