Thanks for coming here. This is a short survey about people's understanding of multiple prefixes to units. It is aimed at technical staff such as Researchers, Engineers or Students. Feel free to forward it.

In the next few pages, you will be asked questions about units. Most of them are very similar, apart from the actual unit. Please reply from the top of your head, and refrain from seeking external documentation at this stage. Please do not change your answers once entered; you will have an opportunity to comment at the end. Please do.

This survey will take about 4 minutes, and it probably has already taken you longer to read this text than it will to complete it.

Answers to this survey are anonymised and presented group by group.

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