Maintenance Engineer Interview Question:

What are the following lines used in Engineering drawing
(a)Dimension Lines
(b)Extension Lines
(c)Leaders?

Submitted by: Muhammad

Dimension lines are the thin lines used to indicate extents and direction of dimension. These are terminated with arrowheads.
Extension lines are also thin lines and it used to indicate the termination of a dimension.
Leaders are used to direct notes or identification symbols to feature on the drawing.
Submitted by: Muhammad