A. 0.1mm
B. 1.0mm
C. 0.5mm
D. 0.2mm
Correct Answer:
Option B – 1.0mm
Explanation
The Metre Rule The metre rule is graduated in centimetres and millimetres. The smallest graduation of the metre rule is 1 mm or 0.1 cm. This is its reading accuracy. Measurements can be estimated up to half this smallest graduation, i.e. 0.5 mm or 0.05 cm.
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