of the french revolution. it was imposed at the business end of the guillotine. >> tucker: so why our our leaders so anxious that we join the rest of the world in using robespierre's favorite to standard measurement? i don't understand. >> tucker: it is assumed to be progressive and assume that evee has got behind it. let me take you back through a little bit of history. a 1793, the height of the french revolution and the french terror, the p.a. draw, the foot of the king. the measurement in france. replacing it with the meter, all customary measures use man and his labor as the basis of the measurement, what is an acre? it is the land that an ox and can tell one day. 5,000 paces, a pace of 5,000 feet each, a meter is wha