Question

Extension lines should start from which part of the drawing?

(a) Away from the outlines

(b) From inside the views

(c) No need for extension lines

(d) Outlines of the view

I have been asked this question in examination.

I want to ask this question from Basic Principles in Dimensioning in division Lines, Lettering and Dimensioning of Engineering Drawing

Answer 1

Correct option is (d) Outlines of the view

Best explanation: Extension lines should start immediately from the outlines of the views. There should be no gap between the outlines and the extension lines. Dimensions should not be given on the outlines themselves and therefore extension lines should be used.