1. Introduction to Technical Drawing Introduction to key vocabulary for Middle School Students
Copyright © 2012 Teresa Johnson
All rights reserved by author.
Permission to copy for single classroom use.
Electronic distribution limited to single classroom use only.
Not for public display.

2. Drafting
A method of drawing used by technical fields to convey information about a product or design.

3. Lettering
Used to give dimensions and other important information needed to fully describe an item.

4. Guidelines Lightly drawn lines used for lettering.
Lightly drawn lines used for lettering.

5. Object Lines
Thick dark line that outlines an object

6. Hidden Lines
Thin but dark dashed line that shows the edge of a hidden surface

7. Accuracy
The ability to avoid errors.

8. Estimate
A rough calculation
art by Phillip Martin

9. Standard measurement
A system of measuring that uses inches, feet, yards, and miles to describe distance, where an inch is divided into 16ths.
(Also known as: English, US Customary or conventional measuring.)
INCH RULER

10. Metric measurement
A system of measuring based on the decimal system, where centimeters, meters, and kilometers, are used to describe distance.

11. Linear Measurement
A measurement of the length of a line.