How to Read a Ruler: 10 Steps (with Pictures)

There are two types of rulers: American and metric. This article teaches you to read both.

Steps

Method 1 of 2: American Rulers

Step 1. Take an American ruler

It must have a total of 12 inches marked. Between each of the inch marks, there should be 15 smaller marks.

Step 2. Learn the "1/16 of an inch" marks

This means that there are 16 of these marks between each inch mark and 192 of them on the entire ruler.

Step 3. Learn the "1/8 of an inch" marks

In total there are 96 of them across the entire ruler.

Step 4. Learn the "1/4 of an inch" marks

In total, there are 48 of them across the entire ruler.

Step 5. Learn the "1/2 inch" marks

In total there are 24 of them across the entire ruler.

Step 6. Learn the "inch" marks

A ruler is made of 12 of these marks. These are numbered.

Method 2 of 2: Metric Ruler

Step 1. Take a measuring ruler

There must be a foot in it. Between each centimeter mark, there should be 10 smaller marks.

Step 2. Learn the "1/10th of a centimeter" marks, or the "millimeter" marks

That means there are 300 of these marks on the entire ruler.

Step 3. Learn the "1/2 centimeter" marks, or "5mm" marks

In total, there are 150 of them on the entire ruler.

Step 4. Learn the "centimeter" marks

In total there are 30 of them across the entire ruler. These are numbered.