# Technical Drawing Topic 2: Scales.

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Technical Drawing Topic 2: Scales

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

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.

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

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

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

16 Scale 1” 16 1” 16 or

16 Scale 1” 8 2” 16 or

16 Scale 1” 4 4” 16 or

16 Scale 1” 2 8” 16 or

16 Scale 3” 4 12” 16 or

16 Scale 16” 16 1” or

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

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