An instrument for drawing or measuring angles.
A heavy solid line drawn parallel to the edges of the drawing paper.
A measurement of length, width, or thickness.
A drawing showing all dimensions at once, also called an Isometric drawing.
A drawing showing each view of an object, usually the front, top and ends of an object, also called an Orthographic drawing.
A picture or likeness made with a pencil pen, chalk, or other instrument.
A rough drawing of an idea, object or procedure.
A solid line showing the visible edges and form of an object.
A series of dashes which indicates the presence of unseen edges.
A solid line with arrowheads at the ends to indicate length, width, or height of an object or part.
A solid line showing the exact area specified by a dimension.
A solid zig-zag line used to show that the illustration stops but the object does not.
A long-short-long line used to indicate the center of a round object.
A solid line with an arrow used with an explanatory not to point to a specific feature of an object.
The ratio between the size of something and a representation of it.