A distance at full size: The distance would be the same length at the scale chosen. A full-sized drawing, for example, would be 1:1 (or occasionally 1/1, or "one to one"). The scale of a half-sized drawing would be 1:2. 1:10 is the scale of **a tenth-size drawing**. 1:20 is the scale of a twentieth-size drawing.

When you refer to something as being "1:1", this means that it is exactly equal in size to another thing. If I say that a painting is "1:1", this means that it is the same size as itself. If the painting is half as big as itself, then the scale is 1:2.

There are other ways to describe scale. It can be said to be "equal emphasis" or "objective proportion". Objective proportion means that the sizes of objects within the image should reflect **their actual relative sizes**. For example, if a tree is twice as tall as **another tree**, then its outline should be shown as such. Equal emphasis means that objects within the image receive an equal amount of attention from the viewer. So, if a tree is twice as tall as another tree, then its outline should still be shown as such even though it's not the most important part of the picture.

In conclusion, a 1:1 scale means that something is the same size as something else. If it's not, then the scale is wrong.

For example, 1/8 on the ruler is a scale that transforms **1/8 inch** on the drawing to **1 foot** on the ruler. This would be a drawing at a scale of 1/8" = 1 foot. When picking the scale on the ruler, keep in mind that there are two scales on each edge. One scale reads from left to right, whereas the other reads from right to left. For example, if you were to pick 1/4 on the left side of the ruler and then move over to the right, you would pick 1/4 again but this time it would be one-fourth of one-quarter, or 1/8.

The first thing you need to know about using the scale rule is that when you put a number on the ruler, it doesn't show up until you put a dimension on the drawing. For example, if you were to draw a line on the sketchbook and then go back to the ruler to measure how far it was, the number you put on the ruler wouldn't appear because there's no drawing element corresponding with it. You can see this for yourself by trying it out: Put a number on the ruler and then go back to the sketchbook to draw a line. The number you put on the ruler won't appear until after you draw the line!

All of the lengths in a scale drawing are affected by **the same scale factor**. A ratio is used to represent the scale. A scale of 1:50, for example, indicates that 1 unit of length on the diagram reflects a length that is 50 times larger on the actual thing. The ratio of 1:150 indicates that the lengths on the figure are equal. There is one important exception to this - the width of paths will vary depending on the scale factor applied to them.

A full-size scale is a scale in which the length of the drawing and the real length of the item are proportional to one another. As a result, its representative fraction is 1:1 by definition. Any scale that isn't a full-size scale can be considered a reduced scale.

When you draw on a reduced scale, the size of **your drawings** will not correspond to what you see out the window. Instead, they will be smaller than what's actually available. You can resolve this issue by using **a full-size scale** when drawing so that you get accurate measurements.

Using **a full-size scale** ensures that your drawings will match **their corresponding items** in reality. It's important to use a full-size scale so that you don't end up with measurements that aren't accurate.

In addition to measuring tools such as tape measures and yardsticks, many instruments are only available in full-size scales. For example, doctors use medical scales when weighing patients so that they can provide appropriate care. Without a full-size scale, doctors would have no way of knowing how much weight to assign each patient.

Full-size scales are also useful for people who work with materials that can't be measured in units such as inches or millimeters.