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Measurement - Length

Measurement - Length. Digital vs. Analog. There are many other types of measuring instruments that measure various other things. Regardless of what you are measuring, the instrument you are using may have either a digital read-out or an analog read-out.

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Measurement - Length

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  1. Measurement - Length

  2. Digital vs. Analog • There are many other types of measuring instruments that measure various other things. • Regardless of what you are measuring, the instrument you are using may have either a digital read-out or an analog read-out. • Digital read-outs are the simplest to read. The measurement is given in numbers just the way you need to record it. • Analog read-outs are in a form similar to that of a ruler. • An indicator, such as a needle, points to the correct measurement. • You must then determine the measurement by reading the scale.

  3. Length • Length is how long an object is; and it is measured in inches, feet, yards, and miles. • These are called English units of measurement. • There are also Metric units that include millimeters, centimeters, meters, and kilometers.

  4. Length • Length is normally measured using a ruler or a tape measure. • Half way between each inch mark is another large mark that shows the half-inch. • There are three smaller marks between the inch and half-inch mark that divide the inch into eighths. • The smallest marks of all divide the inch into sixteenths.

  5. Metric Ruler Measures • The centimeter side is marked somewhat differently. • Each small mark is 1/10 cm = 0.1 cm = 1 mm • ½ of a centimeter = 5 millimeters (mm). • Here are 10 mm = 1 cm. One-tenth is equal to 0.1. • 5 cm + 4 mm = 5.4 cm or 54 mm. • The bright white mark on the ruler below is at 13.3 cm or 133 mm.

  6. Questions

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