explain the accurate method of measuring the length
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Length can be measured by a linear scale rod. The scale is kept with any mark matching the starting edge of object. We will get a mark at the ending point of object. ... For more accurate measurements, instruments like chronometer can be used.
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Standard rulers. ... The meter was initially defined using a ruler before more accurate methods became available. Gauge blocks are a common method for precise measurement or calibration of measurement tools. For small or microscopic objects, microphotography where the length is calibrated using a graticule can be used.
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