Building Industry In Old Times Chapter 336

In later generations, the definition of "meter" originated in France.

The length of a meter was originally defined as one ten-millionth of the distance from the Earth's equator to the North Pole, passing through the meridian of Paris.

And as human understanding of metrology deepened, the definition of the length of meter has been revised several times.

Roman Lu once told Song Yingxing that they needed to determine the meter as a unit to replace the most commonly used step as a measurement unit.

Song Yingxing now saves himself the trouble and takes samples directly from Roman Lu's feet, which seems to be a way to curry favor with him.