To remove unnecessary lines …………is used

For drawing thin lines of uniform thickness, the pencil should be sharpened in the form of-………….

The edge of the board on which T-square is made to slide is called

The main purpose of the leader line is

In drafting machine which one does not follow.

Angles in multiples of 15° are constructed by the combined use of

The size of A4 size paper is

When only one drawing is to be made then its position should be