1. Technical Drawing
Topic 2: Scales

2. Scales A Scale is used for measuring not drawing lines
A scale allows you to draw objects to true size as well as scaled down or up.
Ex: Drawing your hand – true size
Ex: Drawing a tree – scaled down
Ex: Drawing an ant – scaled up

3. Scale We will start by using the true size scale or Full Scale
Find the side that has a 16 on it. That is the Full Scale.
All of the drawings we will be doing over the next couple of weeks will utilize the 16 scale.
The 16 scale is typical of a regular ruler.

4. 16 Scale The 16 scale is 1’ (foot) in length
It has 12” (inches) 12” = 1’
Each of the 12” are broken down into 16 smaller sections, each representing 1” 16

5. 16 Scale Always measure from the 0 (not the end of the scale)
Notice that between each one inch mark, the half-inch mark is the longest. The next longest is the quarter-inch mark, then the eighth-inch, and the shortest are the sixteenth-inch marks

6. 16 Scale Each inch is broken into 16th or 16 segments 16”
1 inch also equals

7. 16 Scale 1” 16 1” 16 or

8. 16 Scale 1” 8 2” 16 or

9. 16 Scale 1” 4 4” 16 or

10. 16 Scale 1” 2 8” 16 or

11. 16 Scale 3” 4
12” 16 or

12. 16 Scale
16” 16
1” or

13. 16 Scale Easy way to measure… 1. Count the full inches
2. Count 16th of the partial inches
3. Reduce the fraction

14. 16 Scale Example: 12” 16 2 full inches and 12” 16 6” 8 3” 4 reduce = =