Chapter 1 and Lecture 1 Flashcards
What is CAD?
Computer-aided design/drafting
Define traditional tools
Devices used to assist the human hand in making technical drawings
What are the three basic types of drawing?
Freehand sketches
Instrument drawings
Computer drawings and models
Define media
the surfaces upon which an engineer or technologist communicates graphical information
What is Vellum?
tracing paper that has been chemically treated to improve transparency
what is polyester film (Mylar)?
transparent, waterproof, tear-resistant film which only lead, plastic lead and ink can be used on
Define technical drawing
Any drawing used to express a
technical idea.
define instrumental drawing
Drawing made with drawing
instruments.
define engineering graphics
Creation of Drawings that are generally applied to engineered products for technical use.
define projection
A way of depicting a 3-dimensional object
on a 2-dimensional plane.
what are the two types of projection
orthographic
isometric (pictoral)
