i. Define parallax error. How will you avoid parallax error when taking a reading?
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How to Prevent Parallax Error
Updated April 30, 2018
By Karl Wallulis
Parallax error occurs when the measurement of an object's length is more or less than the true length because of your eye being positioned at an angle to the measurement markings. For example, a person viewing a car's speedometer from the driver's seat will get an accurate reading because she has a direct line of sight. A person viewing the speedometer from the passenger seat will overestimate the reading because of the angle between his eye, the meter and the arrow.