Technical Drawing and Sketching Terms

Front

construction line

Back

Thin lines that serve as guides while sketching or drawing.

Front

depth

Back

The distance from front to back.

Front

documentation

Back

1. The documents that are required for something, or that give evidence or proof of something. 2. Drawings or printed information that contains instructions for assembling, installing, operating, and servicing.

Front

edge

Back

A sharp side formed by the intersection of two surfaces of an object.

Front

ellipse

Back

A regular oval shape, traced by a point moving in a plane so that the sum of its distances from two other points is constant, or resulting when a cone is cut by an oblique plane which does not intersect the base.

Front

freehand

Back

Done manually without the aid of instruments such as rulers.

Front

grid

Back

A network of horizontal and vertical lines that provide coordinates for locating points on an image.

Front

height

Back

The distance of an object from its base to its top.

Front

hidden line

Back

A line type that represents an edge that is not directly visible, because it is behind or beneath another surface.

Front

isometric sketch

Back

A form of pictorial sketch in which all three drawing axes form equal angles of 120 degrees with the plane of projection.