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A guide to imperial measures - from barleycorn to Roman mile

Duration: 02:18

More or Less presenter Tim Harford invites Number Hub mathematician Matt Parker to present his guide to the imperial measurement system. It all starts with the humble barleycorn.

Available since: Fri 3 Jan 2014

This clip is from

More or Less The Power of Pension Fees

Tim Harford and Money Box's Paul Lewis show how small charges hit pension funds hard.

First broadcast: 03 Jan 2014

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