Which of the following is not listed as a required item on a proper detail drawing?

• A. Weather conditions
• B. Dimensions needed to locate every part feature
• C. Tolerances for every dimension
• D. Units specification

Answer: (A)

On a proper detail drawing, every feature’s size and location must be defined so a manufacturer can reproduce the part. That means you include dimensions needed to locate each feature, tolerances for those dimensions to control variation, and units so measurements are unambiguous. Weather conditions don’t affect the part’s geometry or the dimensional requirements, so they aren’t part of what the drawing should specify. Therefore weather conditions is not a required item on a detailed drawing.