Exam 2: Dimensions, Tolerances, and Notes Used on Drawings

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General notes are notes that apply to the entire drawing. General notes (and flag notes) are always numbered as a single-numbered list in the notes area of the drawing.
Flag notes are notes that are located with the general notes but apply only at specific areas or points on the drawing. A flag note should be identified with a flag note symbol, including the note number at each point of application. The flag note symbol is placed around the note number to indicate that it only applies at specific areas on the drawing.
Local notes are notes that are located at the specific area or point of application on the drawing. Local notes are not included in the listing of general or flag notes. A requirement specified by a local note only applies to the specific area or point indicated.

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A limit tolerance is where a dimension has its high and low limits stated. In a limit tolerance, the high value is placed on top, and the low value is placed on the bottom. When limit tolerances are expressed in a single line, the low limit is stated first, then a dash, followed by the high limit.