Measurement results need to be written down clearly and the International System of Units (SI) includes a set of rules to help.

Can you spot what is wrong with this sentence?

A ship 200 feet long weighing two thousand, two hundred and nineteen kgs. travels at 0.1 Meters per sec.

Full details are given is section 5 of the BIPM publication on the International System of Units (SI), which is freely accessible.

 

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Good practice online modules

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• Introduction to measurement
• Introduction to measurement
• Accuracy and precision
• International System of Units
• Definition of realisation of SI base units
• Calibration and traceability