To prevent warping of the board ……………. is cleated at its back.

The scale should never be used as a …………for drawing straight lines.

A plane other than horizontal and vertical placed at any angle to the principal planes is :

The large size of the drawing board ( as per ISI ) is designated by:

The section obtained when the section plane makes a smaller angle with its axis than that of the angle made by the gener…

….… is used to protect the adjoining lines on the drawing when some parts of the line are being erased.

The drawing for a municipality is done at scale

In case of third angle projection plan is kept at