The conversation between human and AI assistant.
Could you explain the Datum concept that is used in engineering drawing?
Are there any other important concepts related to engineering drawing?
Yes, there are several other important concepts related to engineering drawing, such as tolerance, dimensioning, and geometric dimensioning and tolerancing (GD&T). Tolerance refers to the allowable variation from specified dimensions, dimensioning is the process of adding measurements and labels to a drawing, and GD&T is a system for defining and communicating engineering tolerances and requirements in a precise and standardized way.