With the drafting machine one can perform a series of drawing operations that otherwise could only be achieved with a much more complex use of the classic ruler parallel lines, orthogonal lines, inclined lines according to a preset angle, measurement of angles, etc.
12.
It was Electronic Drafting Machine ( EDM ), sold to Control Data and known as " Digigraphics ", which Lockheed used to build production parts for the C-5 Galaxy, the first example of an end-to-end CAD / CNC production system.
13.
Traditionally, steel detailing was accomplished via manual drafting methods, using pencils, paper, and drafting tools such as a parallel bar or drafting machine, triangles, templates of circles and other useful shapes, and mathematical tables, such as tables of logarithms and other useful calculational aids.
14.
A solution to these problems was the introduction of the mechanical " drafting machine ", an application of the pantograph ( sometimes referred to incorrectly as a " pentagraph " in these situations ) which allowed the drafter to have an accurate right angle at any point on the page quite quickly.
