Every inch in a ruler has secret chambers. There are sixteen chambers in a inch. You measure how many sections of those sixteen parts your now measure and mark for your answer. You might have 1 3/16. That means 1 inch, and 3 parts of the 16. Some times you may see only 8 of the parts or secret chambers. 8 equal parts in the inch. You may measure 1 and 2/8. That means 1 inche and 2 of the 8 parts is the length. You can simplify this and also see that it would also be 1 1/4. That means 1 inch and 1 of the 4 total sections is the length.
When you measure, you need to find the whole number first, and then the "parts of the inch" which is a fraction. And we all know that decimals and fractions are a "part of a whole."
A ruler is an instrument used in geometry.
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