- When using a meter rule, an error may arise when:
I. the rule is not in contact with the object,
II. the end of the object is not aligned to the zero mark of the meter rule scale,
III. the position of the eye is not perpendicular to the scale.
NB: The error that occurs when the position of the eye is not perpendicular to the scale is called parallax error.
Wilfykil answered the question on April 15, 2019 at 05:01
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