Which of the following should a proper detail drawing include?

• A. Dimensions needed to locate every part feature
• B. Weather conditions
• C. User manual notes
• D. Assembly instructions

Answer: (A)

Providing complete dimensions to locate every feature is essential because a detail drawing must precisely define the size, shape, and exact locations of all features on the part so a machinist can manufacture and inspect it without ambiguity. This includes dimensions for holes, pockets, bosses, edges, radii, threads, and the surface finishes or tolerances that govern their acceptable variation. Without these precise measurements, the part cannot be reproduced consistently.

Weather conditions belong to environmental or project constraints and aren’t part of the part’s geometry. User manual notes cover operation and maintenance information, not how the part is made. Assembly instructions describe how multiple parts fit together and are handled in assembly drawings or process sheets, not in the detail drawing for a single part.