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FutureStarrMeasurements on a ruler
A ruler is a device with measurement markings on it used for measuring drawing straight lines. Students, engineers, contractors, and makers use rulers for math, construction, architecture, sewing, landscaping, and more.Many people gauge others by the size of their package on a scale of 1-5. Taking another person's measurements by grabbing their elbow or the middle of their back and holding the ruler up is a much more accurate way to do so is by taking a systematic and methodical fit test.
If all the different lines on a ruler are leaving you perplexed, don't worry! Reading a ruler is really simple once you know what you're doing. There are two types of rulers: the inch ruler, which has 12 big numbers on it (1 for each inch), and the metric ruler, which has 30 big numbers on it (1 for each centimeter). We'll walk you through the basics of each type of ruler. Then, taking measurements will be a breeze.
Learn the inch marks. A ruler is made up of 12 inch marks. These are typically the numbered marks on the ruler and are denoted by the longest lines on the ruler. For example, if you need to measure a nail, place one end directly on the left side of the ruler. If it ends directly above the long line next to the large number 5, then the nail is 5 inches long. (Source: www.wikihow.com)
This ruler measure in two different units of length, inches on one side (English ruler) and centimeters on the other side (metric ruler). A metric ruler is use to measure centimeter(cm) and millimeter(mm), the centimeter is a unit of length in the International System of Units; An English ruler provides incremental measurements in inches, with each inch further divided into smaller fractions.Read an English ruler using fractions of an inch. The distance between any two large numbered lines is 1 inch.
The large unnumbered line that is halfway between them is 1/2 inch. The smaller (but still prominent) line between the 1/2 mark and the numbered inch line is 1/4 inch. The tiny little lines between all of the more prominent lines are 1/16 inch. Zeros that appear after all nonzero digits are called trailing zeros. A number with trailing zeros that lacks a decimal point may or may not be significant. Use scientific notation to indicate the appropriate number of significant figures. (Source: chem.libretexts.org)