What is the least possible error in using a rule graduated in centimeters?

Assessment: JAMB UTME - Physics - 1992 Subject: Physics

Question 1 Report

What is the least possible error in using a rule graduated in centimeters?
Answer Details
The least count of a measuring instrument is the smallest measurement that can be made with it. The least count of a rule is the distance between two adjacent graduations. A rule graduated in centimeters usually has the smallest graduation of 1 mm or 0.1 cm. Therefore, the least possible error in using a rule graduated in centimeters is 0.1 cm.

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