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But Nasa's Mars Climate Orbiter mission, launched in 1998, became the ultimate "metric martyr" when calculations in metric and Imperial standards got mixed up, putting it on the wrong trajectory as it was due to enter Mars orbit.

North East Says No even had their own Nigel Farage, in "metric martyr" Neil Herron, a man-of-the-people market trader who had grabbed headlines with his campaign to protect imperial measures .