Which type of line is indicated in the drawing?

Which type of line is indicated in the drawing?

• A. Dimension line
• B. Leader line
• C. Extension line
• D. Center line

Answer: (A)

Dimension lines are used to display the size of features on a drawing. They are thin lines with arrowheads at both ends that span between two extension lines, and the numeric value of the measurement is placed near the line. They are offset from the feature by extension lines that connect the dimension line to the surfaces being measured. A leader line is a short line that points to a feature with a note or label. Extension lines are the lines that project from the object to the dimension line, showing where the measurement applies. Center lines use alternating long and short dashes to indicate the axis of symmetry or center of a feature. Since the line in the drawing shows a measurement between two features with arrowheads and a value, it is a dimension line.

Dimension lines are used to display the size of features on a drawing. They are thin lines with arrowheads at both ends that span between two extension lines, and the numeric value of the measurement is placed near the line. They are offset from the feature by extension lines that connect the dimension line to the surfaces being measured. A leader line is a short line that points to a feature with a note or label. Extension lines are the lines that project from the object to the dimension line, showing where the measurement applies. Center lines use alternating long and short dashes to indicate the axis of symmetry or center of a feature. Since the line in the drawing shows a measurement between two features with arrowheads and a value, it is a dimension line.