Answer :
Final answer:
The correct option is d) Surface gauge. To make an angled surface parallel to a surface plate, a machinist would use a surface gauge, a precision tool for establishing angles or heights and ensuring the parallelism of surfaces.
Explanation:
The correct option is d) Surface gauge. To indicate an angled surface and make that surface parallel to a surface plate, the machinist would use a surface gauge. A surface gauge is a precision tool used in metalworking and machining to determine the flatness of surfaces and establish angles or heights during inspection phases or when preparing for machining operations.
Unlike tools such as protractors, micrometers, and dial indicators that serve specific measurand purposes (angles, outer dimensions, and small variances in surface topography respectively), a surface gauge is versatile in setting and transferring measurements, especially in ensuring parallelism or perpendicularity of surfaces relative to a known reference like a surface plate.
