In engineering drawing, which type of arrowhead is used?

What do hidden lines in orthographic projections denote?

Dimension lines should be drawn at least ____mm away from the outlines and from each other.

From unidirectional system, it is ______

What is the difference between the section line and the centre line?

If there is a need for the center line, then it can be used as a _____

A dot may also be used to replace an arrowhead.

What is the name of the thin continuous line which encloses the dimension lines are generally drawn 1mm away from the ou…